B R I TISH CHALLOW CHALLOW · 2015. 9. 2. · Within our pre-treatment operation we utilise the...

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severn valley woodworks

total timber solutions BRITISH

M A D E

crop drying and storage products

LINGWARD

garden and landscaping products

HUTTON


quality timber structures

CHALLOW

CHALLOW


LINGWARD


HUTTON



CHALLOW

CHALLOW


LINGWARD


HUTTON



CHALLOW

CHALLOW


LINGWARD


HUTTON



CHALLOW

CHALLOW

MACHINEDSOFTWOOD

PRODUCTS

BULKMANUFACTURING

MACHINEDSOFTWOOD

PRODUCTS

BULKMANUFACTURING

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from forest to end product....

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First established in 1970, Severn Valley Woodworks is today recognised as one of the leading suppliers of quality timber and timber products in the UK.

Within our extensive seven hectare site at Northwood Green in Gloucestershire we combine the very latest technology in our milling and processing operations with the traditional skills and knowledge of our workforce to offer total timber solutions to our customers.

Using only the finest quality timbers from forests across the world, all from approved suppliers and sustainable resources, Severn Valley Woodworks Limited can supply a range of timber products directly to the timber trade, as well as to the construction, agricultural and leisure industries.

For full details of our entire range please visit our website at www.svw2000.co.ukIf you can’t find what you are looking for either in this brochure or on our website, please call us as we will be happy to discuss your needs, subject to volume and lead time required.

total timber solutionsour history 4

environmental policy 5

best choice for the environment 6

preservative treatment 7

treat-right warranty 8

Hutton® garden and 9 landscaping productsThe Cotswold furniture range 10-11The Dean furniture range 12-13Heavy Duty picnic tables 14-15Commercial Grade picnic tables 16Log stores and compost bins 17Arches 18Arbours 19Pressure treated planters 20Planters and window boxes 21Raised bed kits 22Classic oak 23Deluxe fence panels 24Deluxe trellis panels 24Picket fencing & pale gates 25Premium bird range 26Classic bird range 27-28Sheds and storage 29Animal housing 30-31

Timber framed buildings 32-33

Challow® quality timber 34-35 structuresChallow log building 36-37Commercial buildings 38General specifications 39Challow timber frame garage 40General information 41Agricultural structures 42-43

Challow® golf driving range 44-45

Challow® crop storage 46-47

Lingward® crop storage 48

Machined softwood products 49Decking profiles and components 50-51Shiplap profiles 52Loglap profiles 53Boarding profiles 53Stock walling profiles 54Fence capping and picket pales 54Bespoke products 55Bulk manufacturing 55

Introduction to timber 56

Abbreviations 57

Conversion tables 58

contents

BRITISH

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LINGWARD


HUTTON



CHALLOW

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MACHINEDSOFTWOOD

PRODUCTS

BULKMANUFACTURING


LINGWARD


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MACHINEDSOFTWOOD

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BULKMANUFACTURING

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later it had bought the company. This acquisition brought crop storage floors, agricultural buildings, cubicle housing and golf driving ranges to the SVW portfolio.

After the acquisition of Challow, Welvent, a competitor in the crop storage sector, approached the company to become their manufacturer. SVW are still manufacturing for them to this day.

In the early 1990’s SVW were approached by Permacrib to supply components for earth retaining systems. This continues to be an important part of the SVW business.

First established in 1970, Severn Valley Woodworks Limited is today recognised as one of the leading suppliers of quality timber and timber products.

Beginning life as a small coffin manufacturer, SVW moved into pallet making with Heinz as their main customer. This business continued to grow, developing into supplying pallets, packaging cases and timbers to blue chip manufacturers including IBM, Hewlett Packard, Fuji and the Ministry of Defence. As these companies moved their businesses away from the UK, Severn Valley Woodworks was approached by British Coal to supply hardwood timber dowels and plywood pads. This grew into a multi-million pound business which unfortunately came to an abrupt end with the miners’ strike in the mid-eighties.

Around the same time SVW manufactured its first grain floor for its then customer, Challow Agricultural Products, two years

In 1999, SVW acquired Lingward, a competitor in the crop storage sector. Today SVW are by far the largest supplier of crop storage systems, manufacturing in excess of 70% of the current market demand.

In 2003 SVW acquired Hutton Garden Products with its range of oak barrels, bird tables, planters and reconditioned plastics and has since expanded the range to include a wide selection of British manufactured garden furniture.

Severn Valley moved to its current seven hectare site at Northwood Green in 2000. Following the investment in five new moulding lines SVW has grown into one of the largest suppliers of machined and pressure treated softwood to timber merchants.

At the end of 2007 a further manufacturing site was established in Lydney.

From humble beginnings SVW has grown in to a sizeable operation, manufacturing and supplying the most diverse of product ranges.

our history 4

PAST, PRESENT AND FUTUREAll present and future operations will be conducted in a manner which impacts least on the environment. Where contamination has been caused in the past Severn Valley Woodworks has a firm ongoing commitment to remedy the situation. Contaminated land has already been cleared and the site is registered as a clean site.

LEGISLATIONSevern Valley Woodworks is firmly committed to implement and meet all regulatory requirements.

TRANSPARENCYSevern Valley Woodworks will seek to provide as much information as possible on environmental matters. An open invitation exists to customers to conduct their own environmental audit.

The Management of Severn Valley Woodworks Limited recognises that it has a duty to reduce the environmental impact that its business may have.

It is recognised that this should be overseen at the highest level and therefore the Board of Directors assume overall responsibility.

AREAS COVERED• Reducing environmental impact

- water, air emissions, and source of raw materials.

• Reducing Waste - water, raw materials during process, power and fuel.

• Reducing the environment impact of transport - car fleet, haulage.

• Reducing noise impact.

SUPPLY CHAIN

Where a choice of supply is available to the company the most environmentally friendly one will be used whenever possible.

STAFF TRAINING

Severn Valley Woodworks will provide staff training and keep their employees informed on environmental issues.

This Policy Statement, together with its associated procedures and arrangements, will be subject to a continuous review in order to reflect current business activities.

Severn Valley Woodworks, 2014

environmental policy

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The mark of responsible forestry

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Timber is our most environmentally sound construction material.

Severn Valley Woodworks source its timbers from well managed and responsible suppliers who are committed to active replantation programmes in the forests they harvest. The European timber industry, which supplies the overwhelming majority of our timber, has overseen a steady expansion of Europe’s forests over the past 60 years. Between 1990 and 2000 the European forest area grew by 30% and this growth continues, as only 65% of the annual growth is harvested.

The industrial preservative pre-treatments of the majority of our timbers help to ensure they will have the longest service life possible to protect against all forms of fungal and insect attack. The latest generation of wood preservative we utilise, Tanalith® E, is based on copper triazole technology. The copper is derived from recycled resources and is combined with dual biodegradable triazoles, that are commonly used to protect many of the food crops we eat.

“Wood plays a major role in combating climate change... Greater use of wood products will stimulate the expansion of Europe’s forests and reduce greenhouse gas emissions by substituting for fossil fuel intensive products.”

European Commission’s DG Enterprise.

SOURCING TIMBER

Severn Valley Woodworks operate in partnership with Swedish, Finnish and Russian saw-milling companies.

Our supply base has an annual production capacity of over one million cubic metres split between spruce and pine.

Buying from Sweden, Finland and Russia allows us to maintain a regular supply of quality redwood and minimise the impact of unfavourable exchange rates to timber pricing.

We strive to play our full part in achieving vertical integration from forest to end user with the aim of maximising all the benefits available for our customers.

best choice for the environmentCHAIN OF CUSTODY

Forest Certification is a mechanism for managing our forests within the principles of sustainable development. The two main international schemes are FSC® and PEFC. Chain of Custody is the paperwork flow through the chain, from the forest to the final retailer or merchant to prove that the timber in the product is derived from well-managed resources. To claim that the timber is certified all links in the chain from the forest through to the application have to have an audited Chain of Custody process. The company has to show traceability, which means it can identify and track certified timber through its operations. It can also be used to provide traceability for schemes which verify that the wood comes from legal sources. Severn Valley Woodworks Ltd holds chain of custody for both FSC® and PEFC schemes.

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The mark of responsible forestry PEFC/16-37-664

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AUTO-TREATER COMPUTERISED PLANT CONTROL The day to day control of our timber treatment operations is fully automated, providing a wide range of advantages – improvements in health and safety, greater production efficiency, accurate measurement of preservative uptakes and significant cost savings, which we then pass on to our customers.

USE CLASSES USE CLASS TYPICAL SITUATION

1 Internal building timbers with no risk of wetting or condensation.

2 Internal building timbers with a risk of wetting or condensation.

3 External building, fencing and landscaping timbers used out of ground contact.

4 External building, fencing and landscaping timbers used in ground contact.

Use Classes are defined by British and European Standards, providing a guide to the risk of decay and insect attack to timber components, depending upon their end use. The higher the Use Class, the higher the level of preservative protection required. SVW treat all our timbers to meet either Use Class 3 or 4.

To help ensure a long term performance most of our softwood is pressure treated as standard although untreated material can also be supplied.

We can also offer service treatments for customers own materials.

Within our pre-treatment operation we utilise the latest generation, environmentally advanced timber preservative – TANALITH® E.

This renowned preservative gives a proven, outstanding performance, particularly for timbers intended for use in ground contact applications.

From our three on-site treatment plants, with a capacity to treat around 200m3 of timber per day, we can offer a choice of traditional pale green coloured TANALISED® treated timber or, alternatively, a rich brown coloured TANATONE® treated timber, ideal for fencing and landscaping applications.

preservative treatmentTimber loaded into treatment vessel. Initial vacuum applied and the timber cells are evacuated of air. Vacuum held.

Cylinder flooded under vacuum with TANALITH® E wood preservative with TANATONE® brown colourant if required.

Hydraulic pressure applied, forcing the preservative deep into the structure of the timber.

Final vacuum extracts excess preservative solution, which is pumped back to storage.

Low pressure inside timber draws in surface solution when vented to atmosphere. Treated timber is left to dry.

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PRESERVATIVE TREATMENT PROCESS

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Warranty DetailsCovered is the cost of re-supply by Severn Valley Woodworks, or the re-supply by Severn Valley Woodworks (at our option), of a component that is proven to have failed as a result of fungal decay or insect attack within a 15 year period from the initial purchase. It does not cover the costs of removal or reinstatement of such components or consequential costs or loss due to failure of the component.

The term ‘fungal decay’ as used in the warranty refers to wood destroying fungi that feed on and degenerate the wood cell walls. It excludes staining and mould fungi associated with the weathering of wood.

The term ‘insect attack’ refers to attack by wood digesting insects that destroy the timber structure.

The term ‘failure’ refers to damage caused by insects and/or fungi to such an extent that the component is no longer fit for purpose.

This warranty does not affect the statutory rights of consumers.

Warranty Conditions 1. The Hutton® or Severn Valley range of products should only be used for the purpose they were designed for. For instance, the products can be placed in ground contact (surface contact) but must not be embedded within the ground (below the surface).

A combination of using next generation Tanalith® E wood preservative, careful pre-treatment timber preparations, the use of high quality pine timbers and approved treatment procedures allows us to offer a 15 year TREAT-RIGHT performance warranty. This warranty is available on Hutton® garden and landscaping products and also on the Severn Valley range of decking and cladding products.The TREAT-RIGHT warranty covers the failure of these products from wood decay and insect attack giving you and your customers total confidence in their long term performance.

treat-right warranty

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2. Should the Hutton® or Severn Valley range of pressure treated timbers be cross cut, notched or bored during installation, then exposed surfaces are to be liberally brushed with ENSELE end grain wood preservative to the directions shown on the product label.

3. Any Hutton® or Severn Valley range products which are further processed, e.g. planed, must be returned to Severn Valley Woodworks for re-treatment.

4. A proof of purchase invoice must be supplied with any claim made.

Exclusion Any Hutton® or Severn Valley range of pressure treated timber components supplied for use outside of European markets.

....it’s all about confidence!

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LINGWARD


HUTTON



CHALLOW

CHALLOW

The joinery standards used in the Hutton® range are second to none, and most Hutton® timber products are Tanalised® E pressure treated with the latest generation wood preservatives to protect against decay and fungal attack, ensuring a long and low maintenance service life. This means we can offer a 15 Year Treat-Right Performance Warranty* on our Hutton® products.

PLEASE NOTETo minimise twisting and warping all Hutton garden furniture should only be used on firm level ground. Softwood is a natural material and can be prone to twisting and splitting during periods of wet or hot climatic conditions.

The Hutton® range of garden and landscaping products comprises a wide choice of furniture as well as a diverse selection of garden structures, including planters, bird tables, tubs and a robust range of fence and trellis panels. Our products are designed not only to look good but to stand the test of time.

They are manufactured in our own UK factory, using timber sourced from approved suppliers and sustainable sources; most of our products are FSC® certified as shown by the logo.


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M A D E

HUTTON® GARDEN AND LANDSCAPING PRODUCTS

treat-right warranty

*Majority of our Hutton range, please ask for details.

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the Cotswold furniture range premium furniture

Cotswold companion seat COT-CS

Height 965mm

Width 1890mm

Depth 620mm

Weight 52kg

Cotswold chair COT-2

Height 965mm

Width 720mm

Depth 620mm

Weight 21kg

Cotswold 4ft bench COT-4

Height 965mm

Width 1220mm

Depth 620mm

Weight 28kg


Height 965mm

Width 1520mm

Depth 620mm

Weight 38kg


Cotswold swing seat COT-SS

Height 2000mm

Width 1740mm

Depth 740mm

Weight 70kg

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Cotswold garden table COT-GT

Height 555mm

Width 1200mm

Depth 595mm

Weight 21kg

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Our Cotswold range of hand-crafted furniture combines beautiful styling with extremely high standards of manufacture.

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Planters not included.

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the Cotswold furniture range premium furniture

Cotswold rocking chair COT-RC

Height 1020mm

Width 720mm

Depth 980mm

Weight 27kg


Height 965mm

Width 1830mm

Depth 620mm

Weight 48kg

Cotswold dining table COT-DT

Height 760mm

Diameter 1000mm

Length 1780mm

Weight 52kg

Cotswold round table COT-RT

Height 765mm

Diameter 1510mm

Weight 65kg

Cotswold dining set COT-DS

This is a set consisting of our Cotswold dining table with two Cotswold chairs and two Cotswold 5ft benches. Please see individual items for dimensions.

Cotswold round dining set COT-RS

This is a set consisting of our Cotswold round table with four Cotswold chairs. Please see individual items for dimensions.

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the Dean furniture range the practical solution for domestic gardens

Dean garden table DGT

Height 420mm

Width 1180mm

Depth 675mm

Weight 23kg

Dean two seater bench D2SB

Height 1020mm

Width 1350mm

Depth 775mm

Weight 37kg


Dean three seater bench D3SB

Height 1020mm

Width 1900mm

Depth 775mm

Weight 46kg

Our Dean range of garden furniture provides the perfect solution for informal entertaining in any garden setting.

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Dean chair DC

Height 1020mm

Width 760mm

Depth 775mm

Weight 26kg

Dean companion seat DCS

Height 1020mm

Width 1930mm

Depth 775mm

Weight 55kg

Dean rigid picnic table RPT

Height 750mm

Width 1870mm

Depth 820mm

Weight 50kg

Dean Dining Set for 8 People DDS 48

This is a set consisting of our Dean rigid picnic table with two Dean chairs and two Dean three seater benches. Please see individual items for dimensions.

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Supported round picnic table

SRPT

Height 750mm

Width 1950mm

Depth 1950mm

Table Top Diameter 1100mm

Weight 80kg

heavy duty picnic tables practical pieces for garden entertainment

Circular picnic table WYC

Height 750mm

Width 1800mm

Depth 1800mm


Weight 74kg

Our heavy duty furniture is made from joinery grade redwood, pressure treated to resist rot and fixed with plated bolts.

Brecon picnic table (seats 4) BREC

Height 740mm

Width 1180mm

Depth 1520mm

Table Top 1180 x 665mm

Weight 46kg

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Economy picnic table EPT

Height 750mm

Width 1500mm

Depth 1500mm


Weight 40kg

Children’s picnic table CWYE

Height 495mm

Width 1000mm

Depth 900mm


Weight 16kg

Huntley picnic table H1800

Height 950mm

Width 1800mm

Depth 2160mm

Table Top 1800x680mm

Weight 95kg

Backless Bench BB

Height 500mm

Width 2250mm

Depth 475mm

Weight 19kg

Folding picnic table FPT

Height 780mm

Width 2250mm

Depth 760mm

Weight 49kg

Rectangular picnic table WYE

Height 750mm

Width 1800mm

Depth 1500mm


Weight 64kg

Photo shows folding picnic table with two backless benches

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commercial grade picnic tables furniture built to withstand constant use

Large circular picnic table LCPT

Height 750mm

Width 2400mm

Depth 2400mm


Weight 87kg

Large rectanglar A-frame table LRAF

Height 750mm

Width 1800mm

Depth 1500mm


Weight 77kg

Our commercial grade furniture is made from 50mm joinery grade redwood, pressure treated to resist rot, and fixed with plated bolts.


Please note: The seats can be folded for convenience.

Dartmoor square picnic table DART

Height 750mm

Width 2140mm

Depth 2140mm


Weight 112kg

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log stores

Compost bin HCB230

Height 740mm

Width 700mm

Depth 700mm

Weight 20kg

Capacity 230 litres

Compost bin HCB550

Height 740mm

Width 1000mm

Depth 1000mm

Weight 28kg

Capacity 550 litres

Enclosed log store large AHLSL

Height 1540mm

Width 1850mm

Depth 775mm

Weight 75kg

compost bins an essential extra

Please note: All Hutton compost bins are supplied in two packs (two packs make one compost bin).

The Treat-Right Warranty does not apply to the compost bins.

Hutton log store HLS(far left)

Height 1250mm

Width 1240mm

Depth 690mm

Weight 54kg

Enclosed log store AHLS(left)

Height 1240mm

Width 1260mm

Depth 615mm

Weight 60kg

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Left:

Severn Garden Arch SEV

Height 2445mm

Width 1520mm

Depth 740mm

Weight 37kg

arches the perfect garden gateway

Our range of arches are FSC® certified, manufactured from kiln dried joinery grade Scandinavian redwood and pressure treated to protect against rot and insect attack for a minimum of 15 years.

Severn Garden Arch Avon Garden Arch

Right:

Severn Garden Arch AVO

Height 2400mm

Width 1510mm

Depth 740mm

Weight 36kg

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arbours elegant seating - built to last

Westbury Arbour WA(middle, top)

Height 2250mm

Width 1580mm

Depth 740mm

Weight 77kg

Buxton Arbour BA

Height 2080mm

Width 1560mm

Depth 785mm

Weight 103kg

Northwood Arbour NA(top, right)

Height 2250mm

Width 1580mm

Depth 740mm

Weight 75kg

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Westbury Arbour

Avon Corner Arbour

Northwood Arbour

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Avon Corner Arbour ACA

Diamond trellis. Also available with square trellis.

Height 2200mm

Width 2100mm

Depth 2100mm

Weight 145kg

Buxton Arbour

Planters not included.

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Small Hexagonal Planter SHP

Height 245mm

Width 470mm

Depth 390mm

Weight 10kg

Large Hexagonal Planter LHP

Height 305mm

Width 590mm

Depth 520mm

Weight 16kg

pressure treated planters for traditional and beautiful displays

Our pressure treated planters are impregnated with Tanalith® E to protect against rot and decay.The corner planter comprises two sections which can be sold separately (HRP & HRC).

Large Rectangular Planter LRP

Height 365mm

Width 800mm

Depth 500mm

Weight 30kg

Small Rectangular Planter SRP

Height 335mm

Width 700mm

Depth 400mm

Weight 20kg

Corner Planter HCP

Height 570mm

Width 1200mm

Depth 1200mm

Weight 27kg

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Grow Bag Planter GB1

Height 240mm

Width 1000mm

Depth 380mm

Weight 9kg

planters and window boxes for colourful displays

Deep 1m Planter DP1

Height 330mm

Width 1000mm

Depth 380mm

Weight 12kg

Deep 0.5m Planter DP2 (not shown)

Height 330mm

Width 495mm

Depth 380mm

Weight 7kg

Small Square Planter L3-375

Height 355mm

Width 380mm

Depth 380mm

Weight 6kg

Planter on Legs L1000

Height 360mm

Width 1000mm

Depth 315mm

Weight 9kg

Large Square Planter L3-400

Height 355mm

Width 430mm

Depth 430mm

Weight 7kg

Planter on Legs L500

Height 360mm

Width 495mm

Depth 315mm

Weight 7kg

Wall or Window Box W500

Width 495mm

Depth 315mm

Weight 5kg


Width 1000mm

Depth 315mm

Weight 7kg


(shown below)

Width 1500mm

Depth 315mm

Weight 9kg

Wishing Well Planter WW

Height 1070mm

Width 455mm

Depth 455mm

Weight 11kg

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raised bed kits perfect for ‘grow your own’

Large Raised Bed Kit RBK1

Height 220mm

Width 1195mm

Depth 1195mm

Weight 21kg

Deep Raised Bed Kit RBK3

Height 365mm

Width 1195mm

Depth 1195mm

Weight 35kg

Small Raised Bed Kit RBK2

Height 220mm

Width 1195mm

Depth 600mm

Weight 16kg

Manufactured from 38mm softwood, our raised bed kits use a slot down construction for easy assembly with a Class 4 pressure treatment for in-ground contact and a 15 year desired service life even in harsh damp conditions.

Raised Vegetable Planter RVP

Height 760mm

Width 1200mm

Depth 600mm

Weight 36kg

NEW2015for

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classic oakSubject to availability.


24” Oak Tub A24

Height 410mm

Diameter 630mm

Weight 25kg

Quarter Oak Barrel E1

Height 380mm

Width 650mm

Depth 350mm

Weight 14kg

Mini Oak Tub J

Height 220mm

Diameter 330mm

Weight 6kg

Small Oak Tub K

Height 260mm

Diameter 410mm

Weight 8kg

20” Oak Tub A20

Height 320mm

Diameter 520mm

Weight 14kg

Please note: There is no Treat-Right Warranty offered on the Oak products.

All oak tubs, stained. Hoops pinned and painted black.

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V Joint Tongue & Groove Panel TGP

Top/Bottom frames 95 x 45mm

Intermediate battens 45 x28mm

TGV boards 120 x 14mm

Available in the following sizes: 6’ x 6’, 6’ x 5’, 6’ x 4’ and 6’ x 3’

deluxe fence panels heavy duty performance

Our range of Hutton® high performance fence panels are handmade within our own factory and are Tanalised® E pressure treated to protect against decay and fungal attack to ensure a long and low maintenance service life.

deluxe trellis panels classic design and durable build

All our trellis and fence panels can be combined.All battens are machined with four eased edges and pressure treated.

Deluxe Square Trellis Panel STP

Battens/framing 35 x 18mm

Spacing 110mm

Available in the following sizes: 6’ x 6’, 6’ x 5’, 6’ x 4’ 6’ x 3’, 6’ x 2’ and 6’ x 1’

Deluxe Diamond Trellis Panel DTP

Battens/framing 35 x 18mm

Spacing 110mm

Available in the following sizes: 6’ x 2’ and 6’ x 1’

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deluxe trellis panels classic design and durable build

picket fencing and pale gates perfect for enclosed areas

The Hutton® picket fence panel and pale gate range are machined from 25x75mm kiln dried joinery grade redwood and pressure treated with Tanalith® E wood preservative, to give many years of service.

Picket Fence Panel 600PF

Height 600mm

Width 1800mm


Height 900mm

Width 1800mm


Height 1200mm

Width 1800mm

Pale Gate 900PG

Height 900mm

Width 900mm

Pale Gate 1200PG

Height 1200mm

Width 900mm

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Windsor Bird Table WINDSOR

Height 1770mm

Width 480mm

Depth 415mm

Base 805 x 805mm

Weight 15kg

the Hutton premium bird range feed and protect

Decorative detailing and a sturdy construction mean these bird tables will look fabulous in any garden.

Henley Bird Table HENLEY

Height 1720mm

Width 340mm

Depth 340mm

Base 805 x 805mm

Weight 13kg

Ascot Bird Table ASCOT

Height 1590mm

Width 340mm

Depth 310mm

Base 675 x 675mm

Weight 12kg

Epsom Bird Table EPSOM

Height 1590mm

Width 400mm

Depth 340mm

Base 675 x 675mm

Weight 12kg

Worthing Hanging Bird Table

WORTHING

Height 310mm

Width 340mm

Depth 310mm

Weight 3.5kg

Richmond Wall Mounted Bird Table RICHMOND

Height 685mm

Width 335mm

Depth 315mm

Weight 4kg

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bird range feed and protect

Somerset Bird Table SBT

Height 1150mm

Width 450mm

Depth 450mm

Weight 9kg

Somerset Economy Bird House EBH

Height 1200mm

Width 370mm

Depth 370mm

Weight 8.5kg

Somerset Nest House SNH

Height 1470mm

Width 450mm

Depth 450mm

Weight 12kg

Somerset Robin Nest House SRNB

Height 355mm

Width 230mm

Weight 1.5kg

Somerset Tit Nest House STNB

Height 355mm

Width 230mm

Weight 1.5kg

Somerset Wall Mounted Box SWMB

Height 585mm

Width 315mm

Depth 255mm

Weight 5kg

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Gloucestershire Bird House GBH

Height 1150mm

Width 450mm

Depth 450mm

Weight 9kg

Gloucestershire Nest House GNH

Height 1470mm

Width 440mm

Depth 440mm

Weight 12kg

Blaisdon Nest House BNHB/BNHG

Height 1490mm

Width 430mm

Depth 430mm

Base 610 x 610mm

Weight 15kg

Pressure treated with preservative and with a choice of brown or green treatment. BNHB - (Brown) BNHG - (Green).

bird range feed and protect

Somerset Robin Nest House SRNB

Height 355mm

Width 230mm

Weight 1.5kg

Somerset Tit Nest House STNB

Height 355mm

Width 230mm

Weight 1.5kg

Somerset Wall Mounted Box SWMB

Height 585mm

Width 315mm

Depth 255mm

Weight 5kg

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sheds and storage what will you keep in yours?

Apex Shed APEX64

Height 2100mm

Width 1220mm

Depth 1825mm

Apex Shed APEX86

Height 2100mm

Width 1825mm

Depth 2430mm

Apex Shed APEX108

Height 2100mm

Width 2430mm

Depth 3020mm

All sheds are pressure treated green.

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Pent Shed PENT75

Height 2055mm

Width 1524mm

Depth 2133mm


Storage Shed STOR

Height 1875mm

Width 1200mm

Depth 800mm


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animal housing safe, clean and comfortable

Ark Smallholder AH-ASH

Width 2580mm

Depth 1480mm

Height 1000mm

Starter Coop Small AH-SCS

Width 1330mm

Depth 585mm

Height 840mm

Ark Smallholder Raised AH-ASHR

Width 2580mm

Depth 1480mm

Height 1600mm

Starter Coop Large AH-SCL

Width 1930mm

Depth 700mm

Height 630mm

Duck, Goose House AH-DGH

Width 900mm

Depth 1230mm

Height 1480mm

Chicken House Supreme AH-CHS

Width 1630mm

Depth 1035mm

Height 1360mm

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Pig Ark with Floor AH-PAWF

Width 2400mm

Depth 1825mm

Height 1320mm

Pig Ark (not shown) AH-PA

Width 2400mm

Depth 1825mm

Height 1320mm


animal housing safe, clean and comfortable

Dog Kennel Small AH-DKS

Width 1050mm

Depth 1300mm

Height 1180mm

Kennel CW Run AH-KWR

Width 3000mm

Depth 1330mm

Height 1760mm

Rabbit Hutch AH-RH

Width 1800mm

Depth 600mm

Height 1230mm

Rabbit Hutch with Run AH-RHWR

Width 1800mm

Depth 600mm

Height 1230mm

FSC C014384®

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TIMBER FRAMED BUILDINGS FROM SEVERN VALLEY WOODWORKS

Considerable investment in plant and machinery has been made to our production capability which includes the Hundegger K2 milling machine. This machine operates using industry leading software from which all the building CAD design is created.

Each bespoke component is manufactured using the K2’s extensive design features from drilling, notching, morticing, tenoning. The finished components are then delivered to site where the customer can then begin the build.

Severn Valley Woodworks manufactures a wide and varied range of timber frame buildings, these include traditional homes, eco-builds, cart sheds, garages and log cabins, all produced from a complete range of timber materials, Softwood, Oak, Douglas fir, I beams through to Glulam beams.

We work closely with an independent design company and several key customers who design and bring the building to a manufacturing point, we then produce the components and draw all the building materials together.

Timber framed buildings from Severn Valley Woodworks

Conceptual drawings show the timber structure. The stunning building is brought to completion.

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TIMBER FRAMED BUILDINGS FROM SEVERN VALLEY WOODWORKS

A fabulous example of one of the projects we have undertaken is shown in the photos above and below. The Norwegian Architect selected us for his timber framed building solution. The result is a stunning, contemporary home and the views from the windows aren’t bad either!

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solutions that are both affordable and will stand the test of time.

Within our business we live and breathe timber. It is what we know the best. And together with real expertise and experience in supplying a range of markets - private customers, public bodies and commercial organisations - you can be sure that your Challow building will be everything you expect.

We can offer a full design, manufacture and build service, structural design, fabrication and on-site construction.

Benefits include reduced costs, shorter time scales and the benefit of our considerable experience. Alternatively, we can supply individual parts of this process to suit your particular requirements.


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CHALLOW® QUALITY TIMBER STRUCTURES

For over 40 years the Challow name has been synonymous with quality timber structures.From luxury log buildings and functional, well ventilated agricultural and horticultural structures through to golf driving range facilities and our timber framed garage and loft, all providing individual and attractive


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With the development of effective preservative treatments, timber can have a greatly extended service life, even when exposed to the harshest of weather conditions.

The majority of timbers used in our Challow buildings are pressure pre-treated with the latest generation of wood preservative to give ourselves and our customers a real confidence in their long term performance.

Finally, and probably most important of all, timber buildings are more cost effective to construct.


Timber is such a plentiful and versatile construction material that allows manufacturing and construction flexibility as well as having real benefits over man-made alternatives.Firstly, timber has a natural warmth and beauty that provides a real aesthetic advantage when compared to conventional block or brick structures. The timbers we use are from slower grown trees, producing a dense make up with excellent straight grain. Any splitting and distortion is minimised, allowing your timber buildings to keep their natural good looks for decades.

Environmentally, timber is also the best choice for us all. The great majority of Europe’s forests are now sustainably managed and growing in size, supplying high quality softwood timbers in a responsible manner.

As a building material wood has the lowest energy consumption in its production as well as the lowest carbon dioxide emission. Timber buildings act as a ‘carbon sink’, actually locking in CO2 into their structure.

Wood has a superb natural thermal efficiency which increases with the thickness of the timber, reducing the cost of heating and insulation materials in a building.

Timber is very strong. In relation to its weight, timber is stronger than any other building material, producing lighter buildings and simpler foundations.

why timber

Timber offers a 30% more predictable construction time than block or brick work and being relatively light in weight, provides reduced transport costs.

Timber is the natural, high performance and affordable choice for your next building.

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The roof is available in a choice of materials including traditional felt or high specification slate or cedar shingles.

Double glazed and joinery finished timber doors and windows make sure each cabin design is thermally efficient yet keeps the natural beauty of wood.


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CHALLOW Challow log buildings are individually designed to our clients particular requirements, creating attractive, high performance solutions for home and commercial offices, retail units, garden retreats and swimming pool covers.

Initial drawings will confirm the building design and make up to your approval.

The main structure is designed from profiled and interlocking softwood timbers, 95 or 70mm thick, that are precision lap jointed at the corners to give the appearance of a traditional log cabin.

Challow log buildingsCedar Shingles

Slate Tiles

Shingles

CHALLOW® QUALITY TIMBER STRUCTURES 36

Inside the log buildings can be insulated and fully lined with our TGV boarding timbers to give greater comfort and warmth.

All timbers can be preservative pressure treated, if required, or supplied untreated. If untreated, we would recommend application of a high performance decorative coating which will require regular maintenance.

Our team of experienced fitters will erect the new building to your total satisfaction.

Alternatively we can supply the plans and timbers for your own self build project.

Garden Centre Project, Petersfield, from start....to finish


Holiday lodges, hunting, shooting & fishing lodges, offices, cricket pavilions, summer houses, garages, shops, restaurants, swimming pool enclosures, private fitness centres and leisure complexes - the list is endless.


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CHALLOW Challow lodges come in various designs, shapes and sizes, and are suitable for both private and commercial developments and for a range of uses.

commercial buildings


ROOFPlywood roof boarding with battens on rafters and beams as necessary.

CEILINGSTongue and grooved boarding to sloping and flat ceilings, including Kingspan (or similar) insulation board 100mm thick.

EXTERIOR WALLSEx 70mm or 95mm log pressure impregnated construction, pre-drilled to accept dowelling with studding, insulation and tongue and grooved boarding finish.

All our timber buildings can be designed to suit individual requirements using 70mm or 95mm logs, or even 125mm laminated logs. Nonetheless, the package we provide will contain similar elements and our standard specifications will include the following:

log buildings - general specificationsINTERIOR WALLSEx 70mm or 95mm log construction, pre-drilled to accept dowelling.

WINDOWSDouble glazed high performance windows with trickle vents.

INTERIOR DOORSPanel softwood doors supplied complete with door frames, architrave and standard door furniture.

EXTERIOR DOORSPart double glazed softwood doors supplied complete with door frames, architrave and standard door furniture.

VERANDA AND BALCONYOpen lattice design with posts and floor boarding on rafters.

OTHER COMPONENTSAll fascias, soffits, eaves boards and mouldings as required.

Other items are a matter of discussion depending upon what type of planning permission has been gained and what type of construction method is required.


Inside the loft there is an 18mm plywood floor and a large casement window in one gable end. The roof area and walls are insulated with 100mm thick high performance quilt material and then lined with 9mm plywood.

Within the loft there are two framed, ledged and braced doors complete with standard door furniture.

The garage has standard dimensions of 12m in length, a depth of 6m and an overall height of 5m. Alternatively other sizes and design layouts are available to suit individual requirements.

This versatile building, which blends easily into any outdoor setting, is already gaining approvals with planning authorities.


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A welcome addition to our range of timber buildings, this stylish timber framed garage incorporates a substantial loft facility.

The design creates four 3m ground floor bays, one with robust timber doors. The external stairway which leads to the loft can help create an ideal office area or the loft space can simply be used for storage.

All the structural and external cladding timbers are pressure preservative treated to ensure a long and low maintenance service life and the roof material is hard wearing, reconstituted slate and incorporates three skylight windows, together with all the necessary PVC guttering and downpipes.

Challow timber frame garage & loft

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Initially the colour of the treated timber will be a natural pale green. Upon exposure this green colour slowly weathers to a warm honey brown and in the longer term becomes a natural silver grey.

Although treated timber can be decorated if desired, it does not have to be painted or stained to maintain its preservative properties.If treated timbers are to be painted, stained or varnished we would always recommend a high quality, high performance coating.

Always consult the coating manufacturer recommendations before applying a coating product to pressure treated timber and follow the manufacturer’s instructions, taking note of the recommended maximum moisture content of the timber and subsequent maintenance cycles. Before applying a coating, the treated timber should be dried throughout the cross section.

If water based coatings are applied, some discolouration may occur in exceptional circumstances. If this happens, allow the coating to dry completely. Then apply an additional coat of product, preferably one with a high build, high solids content.

PLANNING APPROVALMany kinds of buildings and structures can be built without the need for planning permission. However, because the planning rules and regulations are continually reviewed, in the first instance we would strongly recommend contacting your local planning department. They will be able to advise if you are permitted to build a structure without permission or what procedures must be followed if permission is required.

MAINTENANCE AND DECORATIONTreated TimbersThe majority of external timbers used in the design of Challow buildings are preservative pressure pre-treated to ensure a long term protection against all forms of wood decay and insect attack and provide a greatly extended service life for the building.

log buildings - general informationIf any cuts or notches are made to any of the treated timbers of the buildings, the area of timber revealed must be

liberally brushed with a suitable end grain preservative, such as Ensele, to maintain the integrity of the preservative protection. Always follow the instructions on the can.

Untreated TimbersSome external timbers in Challow buildings are supplied untreated, for instance doors and windows and Log Cabin profiles. In these circumstances we would recommend the application of a high quality, high performance decorative coating, preferably with a high build, high solids content. Always consult the coating manufacturer recommendations on application and subsequent maintenance.

Metal Fixings and FasteningsBecause the treated timber used in Challow buildings has a long life expectancy we use metal fixings and fastenings that have a comparable length of life and will not require maintenance.

Roof MaterialsRoofs should be checked on a regular basis to confirm that no movement or damage to the materials have been caused by the weather or physical damage. Any damage should be repaired as soon as possible.

Gutterings and DownpipesThe drainage systems used on Challow buildings are all PVC based. Regular checks should be made for cracks and joint breakages and repaired as soon as possible. Regular checks should also be made to ensure there are no blockages within the guttering and downpipes.

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buildings have a variety of external cladding design options including preservative treated open boarding, closed boarding, shiplap boarding or box profile steel sheeting.

Preservative treated timber stock walling also provides a safe and natural, high performance lining for the interior of the buildings which provide light, well ventilated and healthy environments for livestock.crop drying and storage products

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CHALLOW The Challow range of agricultural and horticultural buildings provides long lasting, cost effective and versatile solutions for both general storage and animal housing.

These timber frame structures have either a portal, monopitch or propped span frame, in a range of spans to suit particular needs, all manufactured from preservative pressure treated timber. The

agricultural structuresCentral feed passages can easily be designed into the interiors for livestock management, as required.

The low pitch angle of the roof pitches keeps the ridge height on the buildings relatively low and reduces any impact of the structure on the landscape.

This aspect, together with the natural look of the buildings, allows regular approvals from planning authorities.

Cubicle House - Lie Feed Cubicle House - Kennel Unit


Challow agricultural buildings are designed to be simple to erect and extend. We offer a comprehensive design service and a full erection package is also available using our own fully trained and experienced staff.

Monopitch Frame Portal Frame Propped Frame


Dimensions and building angles can be varied to suit particular needs.

The buildings are completed externally with pressure treated horizontal shiplap boarding to a height of 1.22m with chevron boarding up to the roof. Other cladding design options are available.

Internally the width of the bays can be varied and also sectioned with double sided exterior plywood dividers. These can be to a height of 1.22m or to the full height of the


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CHALLOW The range of Challow golf driving range buildings can accommodate any requirement for this ever growing sport practice facility.

The buildings are generally designed as a monopitch timber framed structure, constructed from large sections of graded and pressure preservative treated timbers, with an oversail feature at the front.

Challow golf driving rangebuilding to provide separate and private tuition areas. Bench seating constructed from pressure treated timbers can also be incorporated into the design.

The roof design is a box profile ‘Plastisol’ coated steel sheeting with shadowline type bargeboards and PVC guttering and downpipe systems.

Optional lean-to buildings can be incorporated into the building structure to securely house facility equipment.


Challow 14 bay golf driving range with rear lean-to for office/storage facility project. (below and top right only)


• All components are manufactured in our own factory and are produced in palletised sections that screw together on site. This drastically cuts the on-site installation time and allows for ease of maintenance and re-location at a later date if required.

• The Challow system also offers the further benefit of choice in design detail. They are the only company that offers the option of a folded mesh in lieu of a flat mesh insert. This design produces a near flush surface which means minimal sweeping is required to clean between crops. To achieve this feature without impacting on the strength, the floor plates are profiled to a unique section and the expanded metal inserts are pressed to suit. These features make it our most popular floor design.


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Challow are the specialists in crop drying and storage systems and have been providing complete integrated solutions since they supplied their first drying floor in 1974.With over 40 years’ experience Challow’s reputation for quality and service is unrivalled. All products are carefully designed and constructed to achieve maximum drying performance.

Challow’s range of drive-over drying floors, main air ducts, fan housing and crop retaining walls have been proven by 1000’s of satisfied customers in the UK and European agricultural markets.

The Challow drying floor has advantages over others on the market that are unique to Challow:

Challow crop storage

Challow floor plate design

Drying floor with timber

air duct

Drying floor with steel

air duct

CHALLOW® CROP STORAGE 46

Raised internal fan rooms, perimeter shedder walling and crop retaining walls can all be incorporated to complete the CHALLOW system.

A full installation service is available if required. Challow do not use sub-contractors to install their products but use highly skilled and

experienced installation engineers that are directly employed by the company. They work quickly and efficiently to ensure a consistent high standard of finish.

Challow main air ducts are of proven strength and specification. Challow only use hardwood for the duct frames and hardwood faced plywood sheeting which forms the outer cladding. This is also tongue and grooved jointed for strength and air tight sealing.

Doorway barrier.

Main air duct.

Raised internal fan room.

CHALLOW® GRAIN FLOORS 47

We supply and install a wide range of products to cater for almost any crop drying and storage need.

Our bespoke timber products can be designed to interact seamlessly with any new or existing ventilation or refrigeration set up.


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For over 25 years the Lingward range has offered a flexible alternative of crop drying and storage product within the farming industry.


A composite hard and softwood Lingward floor fitted to an existing main air duct.

Standard Lingward drying floor and main air duct for 3.66m storage.

Vegetable store with ventilation and refrigeration fitted to a Lingward main air duct and floor.

Letterbox ducting for recirculation and ventilation in a box store.

LINGWARD CROP DRYING AND STORAGE PRODUCTS

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All of our products are produced from packaged to length material (PTL) .

Our raw material stock covers the following lengths:

3000mm 3300mm 3600mm 3900mm 4200mm 4500mm 4800mm 5100mm 5400mm 5700mm 6000mm

In this brochure you will see a small selection of the profiles that we produce, for example we have illustrated 9 profiles of decking but we have tooling to produce a further 24 decking profiles at the last count. For full details of our entire profile range please visit our website at www.svw2000.co.uk

If you do not find the profile you are looking for either in this brochure or our website, please call us as we will be happy to match the profile you need subject to volume required and lead time.

In the main our decking and cladding ranges are produced from 5thScandinavian or 4th Russian redwood. Other Redwood ranges available include unsorted, saw falling and 6ths.

Softwood - Manufacturing PolicyMACHINED

SOFTWOODPRODUCTS

Severn Valley Woodworks offers an extensive range of softwood timbers for general use.

All profiles are machined and manufactured by ourselves from high quality kiln dried softwood. Most profiles come pressure pre-treated through our own facilities, with the latest generation Tanalith® E wood preservative to give a 15 Year Treat-Right Performance Warranty.

As well as our standard ranges we can also manufacture to specific requirements.

MANUFACTURINGOur pack sizes work on 1 cubic metre per metre run of length.

Our packs are usually sub-divided into 2 half packs for customer convenience.

Packs have a plastic covering on the top to further protect the finished product.

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All components come pressure pre-treated through our own facilities, with the latest generation Tanalith® E wood preservative.

This helps ensure low maintenance and a long service life for your deck with complete protection against decay and insect attack. We can offer a 15 Year Treat-Right Performance Warranty on certain species of our Use Class 4 ground contact timbers.

For our full range of profiles please visit our website at www.svw2000.co.uk

MACHINEDSOFTWOOD

PRODUCTS

MACHINED SOFTWOOD PRODUCTS

Severn Valley Woodworks has a full range of timber decking products that can create stunning domestic outdoor environments.

Suitable for the garden or for commercial projects such as restaurants, hotels and public houses, our deck boards, spindles, rails and newels posts are all machined from kiln dried joinery redwood.

decking timbers Deck Board ProfilesPressure pre-treated softwood decking.

Profile 108 120 x 28mm









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Newels and SpindlesPressure pre-treated softwood decking components.


Chamfered and Beaded Deck Newel83x83mmLengths: 1250mm, 1500mm 1800mm

Turned Deck Newel83x83mmLength: 1250mm

Flat Top Deck Newelex 100x100mmLengths: 3600mm 4800mm

Turned Deck Spindle41x41mmLength: 895mm

Eased Four Edge Deck Spindle41x41mmLength: 895mm

Roman Column83x83mmLength: 457mm

Stop Chamfered Deck Spindle41x41mmLength: 895mm

Hand and Base RailsPressure pre-treated softwood decking components.

Profile 909 90 x 44mm Profile 921 80 x 35mm

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MACHINEDSOFTWOOD

PRODUCTS

Severn Valley Woodworks offer an extensive range of shiplap, loglap and boarding timbers to create stunning and effective designs for garden buildings.

All profiles are machined and manufactured by ourselves from high quality kiln dried softwood and come pressure pre-treated through our own facilities, with the latest generation Tanalith® E wood preservative to give a 15 Year Treat-Right Performance Warranty.

As well as our standard ranges we can also manufacture to specific requirements. Please visit our website at www.svw2000.co.uk

cladding timbers

Shiplap ProfilesPressure treated redwood.








Profile 209 145 x 20.5mm




MACHINED SOFTWOOD PRODUCTS 52

Loglap ProfilesPressure pre-treated softwood.

Boarding ProfilesPressure pre-treated softwood.





Profile 503 122 x 12mm TGV

Profile 507 144 x 20.5mm TGV

Profile 514 121 x 12mm T&G

Profile 504 121 x 14.5mm TGV


Profile 401 119 x 18mm T&G Profile 404 144 x 20.5mm T&G

Profile 601 94 x 14.5mm TG2V

Profile 501 94 x 12mm TGV Profile 502 94 x 14.5mm TGV



MACHINED SOFTWOOD PRODUCTS 53

wood preservative, helps ensure low maintenance and a long service life for your structure with complete protection against decay and insect attack.

As well as our standard range of stock walling profiles, we can also manufacture to specific requirements on request.

MACHINEDSOFTWOOD

PRODUCTS


Severn Valley Woodworks offer a range of robust stock walling softwood timbers that can create versatile and long lasting components to build agricultural structures.The full range of stock walling timbers is machined in our own mill from home-grown softwoods and is available in a variety of lengths.

Pressure pre-treated through our own facilities, with the latest generation Tanalith® E

stock walling

Stock walling ProfilesPressure pre-treated softwood stock walling.




fence cappingFence Capping ProfilesPressure pre-treated softwood.




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MACHINEDSOFTWOOD

PRODUCTS

As well as our standard range of machined softwood products, we can also design, manufacture and supply timber components for bespoke end uses.

bespoke products


These include:

• Plant display stands

• Garden buildings/cabins

• Agricultural buildings

• Golf Driving ranges

Severn Valley Woodworks has long been established as a manufacturer of bulk softwood products.

These include:

• Earth retaining wall systems that have been used in major construction projects across Europe.

• Acoustic barriers for civil engineering projects.

• Bespoke softwood planters sold through National DIY chains.

• Specialised pallets.

• Potato boxes.

bulk manufacturingIn fact if you have a bulk requirement for softwood products or softwood components then we would be delighted to give you a competitive quotation.

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TIMBER GRADINGThe grading of timber considers the size, quality and condition of a piece of timber at the time of the original inspection.

There are two fundamental types of grading - mechanical and visual:

MechanicalMechanical grading is employed when we try to determine the strength characteristics of a piece of timber. This is usually done by measuring the stiffness of the timber when a load is applied to it by a strength grading machine.

The need to assess the strength of a piece of timber is usually required where timber is to be used in a constructional or load bearing capacity, such as the manufacture of roof trusses.

VisualVisual grading is a judgement of the timber’s appearance and suitability for its end use, considering both the natural characteristics and manufacturing imperfections of each piece.

Visual grading is used to determine grades for constructional use, although it is more usually used to determine the grade based on appearance.

The grade classification for the appearance of the timber is generally determined in the country of origin (see Timber Supply) and varies from species to species.

TIMBER SUPPLY Severn Valley Woodworks utilise only quality timbers from both Russian and Scandinavian sources.

Russian Softwoods The visual grade of Russian softwoods is determined by a complex set of grading rules. The grade is determined by occurrence of defects and also by the general appearance of the piece of timber.

introduction to timberThe main commercial grades imported into the UK from Russia are as follows:Unsorted Grade (Grades 1-3)Fourth Grade Fifth Grade

Scandinavian Softwoods The main commercial grades imported into the UK from Scandinavia are as follows:Unsorted Grade (Grades 1-4)Sawfalling Excluding Sixths (Grades 1-5)Fifths Grade Sixths Grade

In the unsorted grade, greater notice is taken of the defects to the better face and to the fact that edge defects are more decisive than the face defects in determining the grade.

Where defects occur close together on a piece, particularly with knots, the size and quantity of the allowable defects must be less than would otherwise be allowed and the general impression of the cluster of defects must be the basis for determining the grade. Defects that occur in the middle part of a piece are likely to be of greater influence on the grade than defects on the ends.

This guide is not intended to be definitive and in the case of any dispute, reference should be made to the appropriate grading rules as a matter of course.

Timber DefectsDefects in timber are classified into two main groups, as follows:

Defects in Quality i. Structure - comprising of knots, pitch

pockets, bark pockets, compression wood, pitch wood, interlocking grain, cross grain, water wood streak, scars, rot, insect damage.

ii. Manufacture - these arise in the course of production of the sawn timber. These comprise wane, wrong measure and other manufacture defects.

iii. Shakes, Checks, and Splits - are of three different kinds – heart shakes, ring shakes

and seasoning checks and splits that occur during the seasoning of sawn timber. With checks and splits they are measured by lengths and depth with particular regard for their width.

iv. Deformities - include twist, cupping, bowing and springing.

Defects in Condition i. Moisture - where the moisture content of the

timber is not as stipulated in the contract and the timber cannot be considered properly seasoned.

ii. Blue - a decolouration penetrating the sapwood caused by fungi. There are two types; log blue present in the log before it is sawn, yard and kiln blue colour after sawing.

iii. Other discolouration - surface colour changes can take place during drying and storing.

Some of the key timber defects are as follows:ShakeIs a lengthwise separation of the wood which usually occurs between or through the rings of annual growth.

Split Is a separation of the wood due to tearing apart of wood cells. Split is usually due to large variations in temperature.

Stain Is a marked variation from the natural colour of the wood. Natural colour will be uniformly distributed through certain annual rings, whereas stains are usually in irregular patches. Stained wood does not reduce the strength of the piece but may be undesirable where appearance grade timber is required. Stain is usually brown or blue.

Mould A fine vegetable growth, or mildew, that forms on wood in damp stagnant atmospheres. It is the least harmful type of fungus and is usually confined to the surface of wood.

Wane Bark or lack of wood on the edge or corner of a piece of timber.

Weathering Resisting alternate wet and dry conditions. Chemical and mechanical decolouration and disintegration of wood surfaces occur due to exposure to weather, dust, light. Also fibre change may occur due to varied moisture content.

TIMBER TYPES AND STRUCTURESoftwoods Conventional term used to denote the timber from trees belonging to the botanical group, the Gymnosperms. Commercial timbers of this group are practically confined to the class of Coniferae, or Conifers.

Hardwoods General term used to denote the timber from trees belonging to the botanical group, the Angiosperms. Hardwood timbers are generally from slow grown, broad leafed species.

HeartwoodA term applied to the central portion of a log including the pith and the adjacent wood which may be defective.

Sapwood Sapwood is the outer layers of growth between the bark and the heartwood. The outer two to three inches of the sapwood is the living fibre actively involved in growth. The sapwood is the portion of the tree that is most susceptible to stain. Bright sapwood shows no stain and is not limited in any grade, except as specifically provided.

Annual ring of growth (measurement of)An average number of annual rings at either one end of a piece of timber, over a 3” line. The line is usually measured along the centre three inches of the longest radial line that can be drawn along the piece of timber.

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TIMBER MOISTURE CONTENT AND DRYING Timber is “hygroscopic”. This means it will take in and give up moisture depending on the condition in which it is placed. It is therefore most important that we have timber at the right “moisture content” before it is put in-situ. The “moisture content” is the weight of water in the wood expressed as a percentage of the weight of oven dry wood. The “moisture content” of dry wood should range from 14% to 20%.

Why do we dry timber?Look at any felled tree and the first thing you notice is how wet it is. When it is sawn and is still wet, it will not twist, warp or bend. If you manufacture anything from wet timber, there is a very good chance it will become distorted, shrink, split and generally be unusable. When you dry timber these problems are minimised.

By drying timber in a correct manner, tension within the timber, which can cause many defects, is relieved, and we create timber that is ready for the manufacturing process.

There are several advantages to using dry timber. It is stronger and holds nails better than green timber; it is more stable and also minimises future warping; it is less subject to stain, decay and insect attack and is easier to paint and treat with preservatives.

Air Drying This is carried out by stacking pieces of timber on top of each other, separated by lathes or sticks to allow air to circulate. Alternatively, it can be achieved by placing timbers at right angles to each other, creating gaps for air circulation. This method of drying can take some considerable time.

Kiln DryingThis is the method used to speed up the drying process using a kilning chamber or de-humidifier.

TIMBER DURABILITYDurability is an important consideration when specifying timber. The sapwood of most timbers is considered perishable and therefore assessments of the natural durability of any species of timber is based on its heartwood.

The basic classifications of durability are as follows:

Perishable - Less than 5 years when in contact with the ground.

Non durable - 5-10 years when in contact with the ground.

Moderately durable - 10-15 years when in contact with the ground.

Durable - 15-25 years when in contact with the ground.

Very durable - More than 25 years when in contact with the ground.

All the tests refer to heartwood stakes of 50mm x 50mm section driven in the ground.

Because the softwood timbers we utilise contain considerable amounts of sapwood, Severn Valley Woodworks pressure preservative pre-treat our timbers to help ensure they have low maintenance and a long service life.

GENERAL TIMBER TERMSQuarter Sawn Otherwise known as Rift Sawn. Timbers cut radially from the log, which gives a vertical edge of straight grained appearance.

Hit or MissMeans the piece of timber after machining may be completely surfaced, partly surfaced or entirely rough, depending upon the accuracy of the machining.

ACT Actual Measure A.D. Air Dried Batten Sawn softwood

50/100mmx125/200mmBaulk Sawn timber 100 x 115mm or

greaterBoard Sawn softwood under 50mm thick

x 100mm & upB.H.N.D. Borer Hole No Defect B/L Bill of LadingB.S.N.D. Blue Stain No Defect C&F Cost and Freight CDX Softwood PlyC.I.F Cost Insurance & Freight Class 1/0 Flame Retardant classificationC.L.S. Canadian Lumber StandardCu.Ft. Cubic FootDeal Sawn softwood

50/100mmx225/275mmD.B.B. Deals Battens & BoardsD/D DeliveredF.A.S. Firsts & Seconds (As well as Free

Alongside)F.B.M. Foot Board MeasureF.B.Y. Free Buyers YardF.O.B. Free on BoardF.O.M. Free on MotorF.O.R. Free on RailF.O.W. First Open WaterF/R Fire Resistant/RetardantK.D. Kiln DriedLin.Ft. Linear FootLin.M. Linear MetreM2 Square MetreM3 Cubic MetreM.C. Moisture ContentMDF Medium Density FibreboardMerch Merchantable

MR Moisture ResistantM.T.W. Machined to WidthNOM Nominal Measure OSB Orientated Strand BoardPCS PiecesP.E.T. Precision End TrimmedP.H.N.D. Pin Hole No DefectPrefelted Bitumen Coated Roof DeckingPTL Packaged to LengthP.A.R. Planed All Round P.S.E. Planed Square Edge P.T.G. Planed Tongue & Grooved PTGV1/S Planed Tongue Grooved & V

Jointed one sidePTGV2/S Planed Tongue Grooved & V

Jointed two sidesP1E/S1E Planed or Surfaced 1 edge P2E/S2E Planed or Surfaced 2 edges P1S/S1S Planed or Surfaces 1 side P2S/S2S Planed or Surfaced 2 sides P1S1E/S1S1E Planed or Surfaced 1 side

& 1 edge P2S1E/S2S1E Planed or Surfaced 2 sides

& 1 edgeR.S. Rough SawnS4S Surfaced 4 SidesScantling Sawn softwood 50/100mm

x 50/115mmS.D. Shipping DryS.E. Square EdgedSTD StandardStrip Sawn softwood under 50mm

x under 100mmTB Truck BundledTroms Heavy Density Chipboard T/T Through & Through (Sawn)U/S Unsorted WBP Weather & Boil proofW/E Waney Edge

timber industry abbreviations

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conversion tablesLENGTHS Nominal Metric Actual Imperial stock size Imperial 4 ft 1.2 m 3 ft 11 ins

5 ft 1.5 m 4 ft 11 ins

6 ft 1.8 m 5 ft 10 ins

7 ft 2.1 m 6 ft 10 ins

8 ft 2.4 m 7 ft 10 ins

9 ft 2.7 m 8 ft 10 ins

10 ft 3.0 m 9 ft 10 ins

11 ft 3.3 m 10 ft 9 ins

12 ft 3.6 m 11 ft 9 ins

13 ft 3.9 m 12 ft 9 ins

14 ft 4.2 m 13 ft 9 ins

15 ft 4.5 m 14 ft 9 ins

16 ft 4.8 m 15 ft 9 ins

17 ft 5.1 m 16 ft 8 ins

18 ft 5.4 m 17 ft 8 ins

19 ft 5.7 m 18 ft 8 ins

20 ft 6.0 m 19 ft 8 ins

21 ft 6.3 m 20 ft 8 ins

22 ft 6.6 m 21 ft 7 ins

23 ft 6.9 m 22 ft 7 ins

24 ft 7.2 m 23 ft 7 ins

CROSS SECTIONS Nominal Metric Actual Imperial stock size Imperial 5/8 in 16 mm 5/8 in

3/4 in 19 mm 3/4 in

7/8 in 22 mm 7/8 in

1 in 25 mm 31/32 in

11/4 ins 32 mm 11/4 ins

11/2 ins 38 mm 11/2 ins

13/4 ins 44 mm 123/32 ins

2 ins 50 mm 131/32 ins

21/2 ins 63 mm 215/32 ins

3 ins 75 mm 215/16 ins

4 ins 100 mm 315/16 ins

5 ins 125 mm 429/32 ins

51/2 ins 138 mm 57/16 ins

6 ins 150 mm 529/32 ins

7 ins 175 mm 67/8 ins

8 ins 200 mm 77/8 ins

9 ins 225 mm 827/32 ins

10 ins 250 mm 927/32 ins

11 ins 275 mm 1013/16 ins

12 ins 300 mm 1113/16 ins

RUNNING METRES IN A CUBIC METRE 16mm 19mm 22mm 25mm 32mm 38mm 75 mm 833.33 701.75 606.06 533.33 416.67 350.88100 mm 625.00 526.32 454.55 400.00 312.50 263.16125 mm 500.00 421.05 363.64 320.00 250.00 210.53138 mm 452.90 381.39 329.38 289.86 226.45 190.70150 mm 416.67 350.88 306.03 256.67 208.33 175.44175 mm 357.14 300.75 259.74 228.57 178.57 150.38200 mm 312.50 263.16 227.27 200.00 156.25 131.58225 mm 277.78 233.92 202.02 177.78 138.89 116.96250 mm 250.00 210.53 181.82 160.00 125.00 105.26275 mm 227.27 191.39 165.29 145.45 113.64 95.69300 mm 208.33 175.44 151.51 133.33 104.17 87.72

44mm 50mm 63mm 75mm 100mm 150mm 75 mm 303.03 266.67 211.64 177.78 133.33 88.89100 mm 227.27 200.00 158.73 133.33 100.00 66.67125 mm 181.82 160.00 126.98 106.67 80.00 53.33138 mm 164.69 144.93 115.02 96.62 72.46 48.31150 mm 151.52 133.33 105.82 88.89 66.67 44.44175 mm 129.87 114.29 90.70 79.19 57.14 38.10200 mm 113.64 100.00 79.37 66.67 50.00 33.33225 mm 101.01 88.89 70.55 59.26 44.44 29.63250 mm 90.91 80.00 63.49 53.33 40.00 26.67275 mm 82.64 72.73 57.72 48.48 36.36 24.24300 mm 75.76 66.76 52.91 44.44 33.33 22.22

AREAMultiply number of By For equivalent of

Acres 4046.86 Sq metres 0.404686 Hectares 0.004047 Sq kilometres

Sq miles 258.999 Hectares 2.58999 Sq kilometres

Hectares 2.47105 Acres

Sq kilometres 247.105 Acres 0.3861 Sq miles

Hectares 0.01 Sq kilometres

LENGTHMultiply number of By For equivalent of

Inches (in) 25.4 Millimetres (mm) 2.54 Centimetres (cm)

Feet (ft) 30.48 Centimetres (cm) 0.3048 Metres (m)

Yards (yd) 0.9144 Metres

Miles (land 5280ft) 1.609344 Kilometres (km)

Centimetres 0.3937 Inches

Metres 3.2808 Feet

Kilometres 0.62137 Miles

UK IMPERIAL MEASUREMENTSLength

12 inches = 1 foot

3 feet = 1 yard

5,280 feet = 1 mile

1,760 yards = 1 mile

Area

144 sq inches = 1 sq foot

9 sq feet = 1 sq yard

4,840 sq yards = 1 acre

640 acres = 1 sq mile

METRIC MEASUREMENTSLength

10 millimetres = 1 centimetre

1,000 millimetres = 1 metre

100 centimetres = 1 metre

100 metres = 1 hectometre

10 hectometres = 1 kilometre

Area

100 sq millimetres = 1 sq cm

10,000 sq metres = 1 hectare

100 hectares = 1 sq km

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notes

59

FSC C014384®

severn valley woodworks

Church Lane, Northwood Green, Westbury-on-Severn, Gloucestershire, GL14 1ND.Tel: 01452 760994Fax: 01452 760993Email: [email protected]

Issued September 2014® Auto-treater, Tanalith, Tanalised and Tanatone are registered trademarks of Arch Timber Protection.

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