Everite Ceiling Boards

Nutec ceiling boards are manufactured from a combination of Portland cement, silica and organicfibres, and do not contain any asbestos fibres. These materials have considerable strength in theirown right and will not deteriorate with age.

Nutec plain and textured ceiling boards are extensively used as nail-up ceilings and as anall-purpose building board for other interior and exterior applications. Not only are these productsideal for general use indoors, but because these products are not affected by moisture and aretherefore ideal for use in damp areas such as kitchens, bathrooms and verandas, as well as for undereaves linings.

Nutec ceiling boards are non-combustible and will therefore inhibit the spread of fire. They provideperfect protection against flying sparks.

The material will not rot and cannot be damaged by termites and rodents.

All plain ceiling boards are manufactured and tested in accordance with the South African Bureauof Standards Specification SANS 9001:2000 (ISO 9001). The product also carries an SABS Mark underspecification SABS 803-1995.

Nutec ceiling boards are supplied in their natural colour and will accept all water-based paintswithout pretreatment.

For soffit applications areas where high wind pressures prevail, EVERITE should be consulted forparticular fixing and framing conditions.

Introduction 1

Brandered Ceilings 2009

General Design Criteria .............................................................................................................................. 3

Handling and Storage ................................................................................................................................ 4

General Installation Guidelines.................................................................................................................. 5

Installation Procedures

• Using H-profile jointing strips.................................................................................................................. 6

• Levelling brandering ............................................................................................................................. 7

• Installing ceiling board.......................................................................................................................... 8

• Installing Nucornice............................................................................................................................... 9

• Nucornice Adhesive ........................................................................................................................... 11

• Using exposed beams ........................................................................................................................ 12

Product Range

• Nutec ceiling boards – Plain .............................................................................................................. 14

• Fixing Accessories . ............................................................................................................................ . 15

Summarised Data ...................................................................................................................................... 16

Sample Bill of Quantities............................................................................................................................ 19

Company - Contact Details ..................................................................................................................... 20

Index 2


Catalogue InformationThe information contained in this catalogue serves as a general guide only and should not be acceptedas the standard for all construction. Consult EVERITE for designs of a special nature.

This service is provided free of charge and without obligation, but architects, engineers and specifiersmust finally approve the acceptability in terms of the design and construction criteria, as well as otherimplications.

Supporting StructureTo ensure a high standard of finish, it is essential that the supporting structure is accurate andsound. Warped, twisted or poor quality battens will reflect in the finished surface of the ceiling andfor best results selected structural grade timber should be used.

When a perfectly flat ceiling is required and lighting conditions are such that the slightest unevennesswould be accentuated, the brandering should be accurately sized and the spacing decreased.

CondensationCondensation normally has no effect on Nutec ceiling boards, but it is nevertheless recommendedthat the space between the ceiling and the roof is adequately ventilated.

Fixing AccessoriesA specially designed range of fixing accessories such as nails, H-profile strips and cornices areobtainable from EVERITE, full details are given under Fixing Accessories, Page 15.

Site ServiceSite service personnel are available on request, to provide assistance on recommended storage,handling and installation of Everite’s products.

Standard Brandering for Different Truss SpacingsThe size of brandering used to construct the supporting framework for the ceiling boards isdependent on the spacing of trusses or rafters. Refer to Table 1, page 6.

StorageCeiling Boards must be stored indoors.

General Design Criteria 3


Nutec ceiling boards are cement-based and may be damaged under excessively high shock loads.Reasonable care should therefore be taken to ensure that the products are not dropped or subjectedto rough handling.

Ceiling boards should not be exposed to the elements and under cover storage is recommended.

A smooth level under cover area should therefore be made available where the boards can bestacked safely. The boards should be stacked clear off the ground on suitable timber supports atmaximum 400mm centres and the edges and corners protected against possible damage.

Where under cover storage is not available, the stacked product should be covered to avoid itbecoming soaked with water. Soaked boards will be difficult to handle and should be allowedto dry out before use.

Handling and Storage 4


Ceiling board

The following basic safety rules and work practices should be observed when working withthe product.

• Although Nutec ceiling boards are manufactured without asbestos as a raw material, it isnevertheless recommended that tools which do not create excessive dust are used when workingwith the product.

Ordinary carpenters’ tools can be used effectively.

• For straight cutting of either 4mm or 6mm ceiling boards, a scriber or any other sharpobject is all that is required to scribe the surface of the board. The board will break on thisline if held firmly on a flat surface with a straight edge and the surplus board snapped offRefer Fig. 1 and Fig. 2.

For further information refer to the brochure ‘Finishing and Maintenance’.

FIG. 1 Scribing the Board

FIG. 2 Snapping off surplus Board

General Installation Guidelines 5


Installation Proceduresfor Standard Ceilings

6

TABLE 1 Standard Brandering/Truss spacing

Truss or Rafter Spacing (mm) Brandering Size Required (mm)

1 050 (maximum) 38 x 381 500 (maximum) 38 x 50 on edge

NB: Specially designed brandering is required for truss or rafter spacings in excess of thoseshown in this table.

Brandering RequirementsThe spacing of brandering shown in Table 2 is based on practical tests carried out for the variousthicknesses of ceiling boards.

Cross brandering is necessary at the joints and when cornices are to be fixed at right angles tothe brandering.

TABLE 2 Spacing of Brandering for standard boards STEP 1

Board Thickness (mm) Maximum Brandering Centres (mm)

4 4506 600

Using H-Profile Jointing Strips

STEP 1

Installing supporting brandering. Refer Fig. 3, page 7.

• Starting at one end of the room and at right angles to the trusses, nail a length of branderingto the tie beams of the rafters 25mm away from the wall. Nail another length of brandering tothe tie beams on the opposite end of the room, 25mm away from the wall.

• Bearing in mind the maximum spacing required, refer Table 2, above. Commence at the firstpiece of brandering erected and mark the spacings for the brandering on the tie beam next to the one wall. Repeat this on the tie beam at the opposite side of the room. With the aid of achalk line mark the remaining tie beams accordingly. Skew nail brandering to the tie beams on the lines marked.

• To provide for fixing the cornice, fix short pieces of brandering 25mm away from the walls at rightangles to and between the brandering already installed.

• Install supporting timber where light fittings are to be suspended from the ceiling.


FIG. 3 Installing Supporting Brandering

STEP 2

Levelling of the brandering. Refer Fig. 3 and Fig. 4

• To check the level of the brandering, span a fish line across the room in various positions.

• Use wooden wedges to level where necessary.

FIG. 4 Levelling of the Brandering By Wedging

Installation Proceduresfor Standard Ceilings (cont.)

7

All dimensions in mm

All dimensions in mm


STEP 3

Installing the ceiling boards. Refer Fig. 5

• Measure the length and width of the room to establish the number of full boards required.

Space the boards so that the standard width boards are fixed from the centre, finishing offwith equal cut boards at each side of the room.

• Starting from the middle, place the ceiling boards at right angles across the brandering onthe position previously established and nail in place with 32 x 2,5mm serrated ceiling nails.

The nails should be placed at 150mm centres and not closer than 12mm from any edge ofthe board.

• Push an H-profile jointing strip onto the long edge of the board. Fit the next board into theH-profile strip and fix that board.

• Fit H-profile cross sections cut to size onto the short edges of the board.

• Repeat this procedure until the ceiling is complete.

NB: If more than one board is required for the length of the room, the best effect is achieved withstaggered joints.

FIG. 5 Installing the Ceiling Boards

Installation Proceduresfor Standard Ceilings (cont.)

8

1 Tie Beam2 Brandering3 Wallplate4 Nutec ceiling board5 H-profile jointing strip6 Wall


Nucornice1. The product

Nucornice is a paper covered polystyrene core cove cornice. It is designed for use as a decorativefixing cornice at the angle where wall and ceiling meet.

Nucornice is lightweight, durable, easy to handle and suitable for all dwellings.

2. Specifications1. Width: 75mm2. Lengths: 3,0m and 3,6m3. Mass: 40g per metre

3. Product Cross Section

5. There are four types of mitre cuts:

1. External Angles 2. Internal Anglesa. Left hand c. Left handb. Right hand d. Right hand

Nucornice 9

4. Nucornice performanceNucornice will last as long as the life of abuilding/house under normal conditions.

Nucornice can be used to seal airpassage ways around ceilings and willassist thermal insulation performancebetween rooms.

Easy to fit 1. Measure 2. Cut

Measure length of Use a mitre box andcornice and angle fine-tooth saw for

cutting

3. Fit

50,4

21,8 21,8

6 6

R69,58

Externalangle

Internalangle

Lefthand

Righthand

Lefthand

Righthand

a b c d


Cutting Mitres

6. In order to cut a left hand corner mitre, the mitre must be positioned to the left of the length ofcornice and line up the measured mark with the opposite mitre block slot (depending on whetherthe angle is to be internal or external).

For a right hand corner position the mitre block to the right of the length of cornice.

All marks, measurements, and cuts must be made from the back of the cornice’s wall edge.

STEP 4

Installing the cornice. Refer Fig. 6

• Measure the length of Nucornice required and cut.

• Strike a chalk line on the wall to maintain alignment.

• Mitre the corners for a neat finish and nail to the brandering and to the wall or glue toceiling board and to the wall.

FIG. 6 Section through edge of Ceiling showing installation of Nucornice

Installation Procedures (cont.) 10

Left Hand MitresExternalangle Internal angle

Mitre Blockto left

Right Hand MitresInternalangle External angle

Mitre Blockto right

1 Longitudinal brandering2 Cross brandering3 Nutec ceiling board4 Nucornice5 Fixing point/solvent free adhesive6 Plaster7 Wall


The ProductNucornice adhesive (NC adhesive), an acrylic filler and adhesive, has been specifically developed for usewith Nucornice and glues, seals and fills in one process.

Easy to Use• Nucornice cornice are prepared the same way as conventional cornice.• Cut Nucornice to size and apply NC adhesive evenly to the contact edges with a paint scraper. Ensure

there is a 2 mm vertical gap between all sections of Nurcornice to allow for movement.• Press into position and leave. (NC adhesive bonds immediately)• Remove excess NC adhesive with your finger, sealing the horizontal joints at the same time.• Installed Nucornice must immediately be wiped clean of excess NC adhesive with a damp cloth or

sponge.• Vertical joints and corners can be filled with NC adhesive about 7 days later, or just before painting.

Specifications• Available ready-to-use in 310 ml tube and 2l and 5l resealable buckets.• Fixes between 16 m and 20 m of 75 mm cove cornice per litre.• Best applied with a paint scraper.

Benefits of Nucornice• Nucornice is a fraction of the weight of conventional cornice.• Nucornice does not suffer from breaking during transport and erecting.• NC adhesive can be used against non-painted as well as painted walls.• Gluing Nucornice prevents unsightly hammer marks and ugly nail heads, which need to be filled and

sanded later.• Gluing Nucornice seals the ceiling to the wall in one step and the bond is flexible enough to accommodate

movement in ceiling and roof without cracking.• Gluing Nucornice with NC adhesive cuts fixing and sealing time by up to half compared to the traditional

nailing method of conventional cornice.

Nucornice Adhesive 11


In this application the beams perform a dual function, that of a load bearing structure as well asa decorative feature. The Nutec ceiling boards, plain or textured are fixed on top of the beamsor between them.

General GuidelinesFor fixing on top of the beams, the following steps should be followed:

• The spacing of the beams must be at 400 mm centres or 600 mm centres for 4 mm or6 mm Nutec ceiling boards respectively.

• The spanning capabilities of the board can be increased by nailing brandering on thereverse side of the board at the appropriate centres before installation.

• The beams which are the feature of this application must naturally be clean and straight,as well as properly aligned. Twisted or warped beams will negatively influence the final ceiling.

STEP 1

Installing the board. Refer Fig. 7(A), .

• Fix boards on top of and parallel to the beams thus reducing the number of visible joints.

• For cross joints use H-profile jointing strips cut to size.

STEP 2

Adapting the roof structure. Refer Fig. 7(B), Page 13.

• Fix counter battens on top of the ceiling board directly above the beams.

Take care not to damage the ceiling board when nailing on the battens.

• Fix waterproofing membrane over counter battens, allowing it to sag onto the ceilingboard between the counter battens.

• Fix battens or purlins for roofing material over waterproofing membrane through counterbattens into the rafter.

Pre-drilling of pilot holes is recommended to reduce the possibility of damaging theceiling board.

Using Exposed Beams 12


FIG. 7 Roof/Ceiling Structure

NB: • In cases where the roof structure and roof are already in position, it is necessary to installsupporting timber for the ceiling. Where the spacing of the beams is within the spanningcapabilities of the ceiling board, refer Table 2, Page 6, it is only necessary to install a strip ofsupporting brandering on both sides of the beams to which the ceiling can be nailed, refer Fig7(B).

• A timber quadrant can be used to finish off the board edges where they join thebeams and the H-profile jointing strip cut to size can be used on cross joints.

• Where the beam spacing exceeds 600mm a supporting grid must be installedaccording to the directions under Step 1, Page 6.

Using Exposed Beams (cont.) 13

1 Waterproofing membrane2 Nutec ceiling board3 H-profile jointing strip4 Counter batten5 Timber beam6 Brandering

Fixing Ceilings Over Beams

Fig 7

Fixing Ceilings Inbetween Beams

Fig 7


Nutec Ceiling Boards

Plain

Product No. Nominal Thickness Size Average Mass

mm mm kg

060-403 4 2 400 x 900 13,0060-405 4 3 000 x 900 16,0060-406 4 3 300 x 900 18,0060-407 4 3 600 x 900 20,0

060-410 4 2 400 x 1 200 17,0060-412 4 3 000 x 1 200 22,0060-413 4 3 300 x 1 200 24,0060-414 4 3 600 x 1 200 26,0

060-610 6 2 400 x 900 18,0060-612 6 3 000 x 900 23,0060-614 6 3 600 x 900 27,0

060-617 6 2 400 x 1 200 25,0060-619 6 3 000 x 1 200 31,0060-621 6 3 600 x 1 200 37,0

Product Range 14


Product No. Description Size Length Averagemm mm Mass kg

685-080 H-profile steel jointing strip 4 3 600 0,73685-081 4 4 800 0,98685-084 6 3 600 0,73685-085 6 4 800 0,98

685-289 H-profile P.V.C. jointing strip white 4 4 800 0,5685-283 4 3 000 0,30685-285 4 3 600 0,36690-038 6 3 600 0,001

605-730 Nu-doric 75 mm 3 000 0,12605-736 Nu-doric 75 mm 3 600 0,14

605-750 Nu-doric 127 mm 3 000 0,14605-751 Nu-doric 127 mm 3 600 0,15

605-754 Nu-corinthian 127 mm 3 000 0,14605-755 Nu-corinthian 127 mm 3 600 0,15605-756 Cove Cornice Plain 75 mm 3 000 0,1

(Non Paper Covering)

605-632 Galvanised serrated ceiling nails 2,5 32 750/kg app.

605-749 Nucornice Adhesive 310 ml 0.45kg605-803 Nucornice Adhesive 2Lt 3.0kg605-804 Nucornice Adhesive 5Lt 7.6kg

Fixing Accessories 15


Summarised Data 16


Mechanical and physical properties for plain and texturedNutec Ceiling Boards

PARAMETER

DIMENSIONSThickness Tolerance:4mm6 mmLength Tolerance:595mm1195mm1495mm1800 mm to 2400 mmWidth Tolerance:495mm595mmSquarenessAll sizesEdge TruenessAll sizesPHYSICAL PROPERTIESMinimum MOR : With GrainMinimum MOR : Across GrainTarget DensityMaximum Hygral Linear Expansion

Thermal ConductivityThermal Expansion Coefficient20-70˚C10-70˚CMoisture MovementWith GrainAcross GrainMoisture ContentWater AbsorptionPermeability

Water Vapour TransmissionpHMECHANICAL PROPERTIESMOR : With Grain

MOR : Across Grain

Classification in accordanceto ASTM C1186

UNIT

mmmm

mmmmmmmm

mmmm

mm

mm

MPaMPag/m3

mm/m

W/m.K

˚C-1˚C-1

%%%%-

ng/Pa.s.m2

-

MPaMPaMPaMPaMPaMPa

-

Nutec Board

± 0.5± 0.5

+0 or -1+0 or -2+0 or -5+0 or -5

± 2+0 or -2

Maximum 2

Maximum 3

7.40 (1)

10.60 (1)

1.262.47

0.19

Negligible9.31 x 10 -6

0.060.066.2537.72

No droplets formed

276.7910 – 12

4.20 (2)

7.50 (3)

11.20 (3)

7.75 (2)

12.10 (3)

16.40 (3)

I

TEST METHOD

SANS 803SANS 803

SANS 803SANS 803SANS 803SANS 803

SANS 803SANS 803

SANS 803

SANS 803

SANS 803 – 1995SANS 803 – 1995ISO 8336-1993SANS 803 -195

ASTM C518

SANS Doc. 722/W 1009ASTM C531

ASTM C1185ASTM C1185ASTM C1185ASTM C1185

SANS 685 – 1985ASTM C1185

BS 4624ASTM E96

-

ASTM C1185ASTM C1185

BS 4624ASTM C1185ASTM C1185

BS 4624

ASTM C1186

SPECIFICATIONS

TYPICAL VALUES

Summarised Data (cont.) 17


Mechanical and physical properties for plain and texturedNutec Ceiling Boards

PARAMETER

Classification in accordanceto ASTM C1186Compressive Strength Parallelto Surface of BoardWith Grain

Across GrainTensile Strength Parallel toSurface of BoardWith Grain

Across Grain

Tensile Strength Parallel toSurface of BoardYoung’s Modulus (E.Mod)With Grain

Across Grain

Block Shear Strength

FIRE PROPERTIESSurface Spread of FlameSpread of Flame IndexHeat Contribution IndexSmoke Emission IndexSurface Fire IndexSurface Burning CharacteristicsFSISDNon-CombustibilityContinuous TemperatureOTHER PROPERTIESFrost ResistanceCycles CompletedStrength RatioBiological ResistanceRodent ResistanceTermite ResistanceResistance to Bacteria

(1) Dried till constant weight(2) Saturated with water(3) Equilibirum conditions

UNIT

-

MPaMPaMPaMPa

MPaMPaMPaMPaMPaMPa

MPaMPaMPaMPaMPaMPa

Class----

--

-

-%

Class

Nutec Board

I

10.86 (2)

15.57 (3)

11.54 (2)

19.58 (3)

2.11 (2)

3.26 (3)

2.24 (2)

2.88 (3)

0.83 (2)

1.02 (3)

5337 (3)

3974 (2)

6474 (3)

4681 (2)

1.60 (2)

1.32 (3)

1NilNilNilNil

03

Non-combus.150˚C

5078,5

B1No DamageNo Growth

TEST METHOD

ASTM C1186

ASTM D1037ASTM D1037ASTM D1037ASTM D1037

ASTM D1037ASTM D1037ASTM D1037ASTM D1037ASTM D1037ASTM D1037

ASTM C120ASTM C120ASTM C120ASTM C120ASTM D143ASTM D143

BS 476: Part 7 + SABS 10177: Part 111SANS 10177 Part IIISANS 10177 Part IIISANS 10177 Part IIISANS 10177 Part III

ASTM E84ASTM E 84

BS 476 Part 4, SANS 10177: Part V-

ASTM C1185ASTM C1185

SANS Method 5419SANS Method 5471

BS 5980

SPECIFICATIONS

Summarised Data (cont.) 18

Selection guide for Nutec ceilings

Product ApplicationCeiling Thickness Width LengthRange mm mm mm

Nail-up Ceilings& Soffits

Exposed Beams

Nutec (plain)4 2400 - 3600mm6

900300 increments

Nutec (plain)4 2400 - 3600mm6

1200300 increments


Description Quantity Rate Amount

PreambleAll ceiling boards shall be EVERITE Nutec. Ceilingboards and fixing accessories shall be used strictlyin accordance with EVERITE instructions or asdirected by and after consultation with EVERITE.

The contractor shall, upon request of the architect,furnish him with written proof that EVERITE hasbeen consulted. EVERITE product numbers areindicated in brackets in the description.Numbers are omitted in the case of non-standardsizes, These can be supplied on request.

CeilingsEVERITE Nutec ceiling boards (specify thickness)and fixing accessories fixed to (specify type andbrandering material), with and including 32mmx 2,5mm galvanised serrated ceiling nails (605-632),complete with H-profile jointing strips andNucornice (specify type) including all cuttingand waste.

1 Measured net m2

Sample Bill of Quantities 19


20

Call Centre - 0861 333 835www.everite.co.za


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