PM RENDERA polymer modified render specially formulated to adhere directly to a variety of substrates insulating polystyrene wall panels

FEATURES & BENEFITS

• Pre-blended

• Only requires the addition of water

• Excellent adhesion

• Minimal drying shrinkage

• Suitable for low porosity substrates

• Creamy texture

• Application thickness 4mm-10mm

• Off white appearance

PACKAGINGAvailable in a 20kg bag

WHERE TO USE

Davco PM Render is suitable for internal and external projects over a wide variety of substrates such as expanded and extruded polystyrene walling systems, blueboard, fibre cement sheet, brickwork and concrete. The carefully controlled formulation contains high quality ingredients combined to produce a creamy render ensuring excellent application properties and workability.

Supplied in a dry powder form, Davco PM Render only requires the addition of water to produce a mortar plaster that exhibits minimal drying shrinkage and excellent adhesion to clean polystyrene substrates. When combined with a suitable alkali resistant mesh it reinforces the surface and exceeds the tensile strength of the base substrate panels. It can also be applied directly over low porosity substrates such as off-form concrete and smooth masonry.

PRODUCT INFORMATION

VOC Content

Low VOC <1g/L

Coverage

20kg bag of Davco Render covers approximately 2.8m2 (based on single coat with an average thickness of 4mm)

Cure Time

Single coat 6-10 hours at 25°C

Product Data Sheet

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DIRECTIONS FOR USE

• Test product in an inconspicuous area first

SURFACE PREPARATION General

• All surfaces must be installed according to manufacturer’s instructions and relevant Australian Standard(s) and be structurally sound, dry, clean and free from movement, oil, grease, wax, sealers, curing compounds, release agents and any other loose or contaminating material. Thoroughly clean old surfaces, or new surfaces that have been treated, prior to applying the render

• Surface misalignments and protrusions (splashed mortar, form or shutter marks in off-form concrete) should be trimmed back. Tie wires nails or steel on the surface must be completely removed. All other metal elements must be corrosion stabilised

Coverage

Use the table below as a general guide:

AVERAGE THICKNESS COATS APPROX MATERIAL (KG/M2)

4mm 1 7.2

6mm 1 10.80

8mm 2 14.40

10mm 2 18.00

MIX PREPARATION Mix Process

SITUATION / REQUIREMENT MIX REQUIREMENTS PER 20KG

General applications 3-4L of clean, potable water

• The water component should be measured into suitable containers or mixing devices and the powder slowly incorporated during mixing. Ensure the water temperature does not exceed 25°C

Note: Davco PM Render can be mixed with a variety of mortar mixing devices and applied using the conventional hawk and trowel method, levelling with a screed or rule and finished with wood, plastic or sponge floats

APPLICATION 1. Application by hawk and trowel should occur in two passes,

a tight first pass followed by a second levelling pass.

2. Apply a 1-2 mm adhesion coat before placing the reinforcement mesh.

3. Then apply an additional 3-5mm coat over the mesh while the first layer is still wet.

4. Davco PM Render droppings or set materials should be discarded, not re-tempered with water. Always terminate the render applications above the damp course line. Weep holes should not be filled and reinstate if they happen to be coated over. Never bridge the damp course.

Cure Time

• Davco PM Render will dry at 25°C and 50% relative humidity in around 6-10 hours depending on the dampness of the substrate. As a general rule however, cement renders should be kept damp for the first 12 hours to ensure proper hydration of the mixture. If drying is too rapid, hydration will not take place and the render will not develop its full strength and will become friable

• Davco PM Render should be allowed a minimum of 7 days to cure.

Note: Setting time is affected by site conditions, climate and couldbe faster or slower than specified

Overcoating

• Davco PM Render should be left for at least 7 days before applying an acrylic texture or topcoat

• Davco PM Render is not designed to be left unprotected and should be overcoated. If left for too long in the elements there is real likelihood of “rust looking staining” occurring on the rendered finish, as the fossilised wood particles in the sand leach out water

Clean-up & Return to Service• Clean all tools and mixers with water while the render is still

wet

• Allow product to set firmly before return to service

PRECAUTIONS

Safety

• SDS is available from www.parexdavco.com.au

• It is recommended that applicators wear PVC or similar gloves and safety goggles while handling this product

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General

• Davco PM Render must not be applied at elevated temperatures above 30ºC or in hot windy conditions

• Davco PM Render should be protected from rain and frost for the first 24 hours

• Applications on large areas in full sun should be avoided (and / or the surface should be cooled and tempered with plenty of fresh water). Always try to work in shaded areas

• During inclement weather, application should be stopped to give the product sufficient time to set. Protect the finished work around down pipes, spouts or where water may continually splash or wet the surface

Specific

• For other uses not mentioned in these instructions, please visit www.parexdavco.com.au

TECHNICAL DATA

TECHNICAL DATA RENDER

Appearance Off-white powder (can not be tinted)

Shelf life when stored unopened in elevated, cool, dry location 12 months

All measurements are taken at 25ºC and 50% relative humidity. Specifications vary according to site conditions and should be taken as a guide only.

ParexGroup reserves the right to inspect any alleged failure at our cost. No responsibility will be accepted unless a representative of ParexGroup is afforded the opportunity to inspect any alleged failure.

parexdavco.com.au1800 653 347 technical@parexdavco.com.au facebook.com/ParexDavco

Quality ISO 9001

ParexGroup products manufactured in Australia are produced in accordance with quality management systems certified as complying with AS/NZS ISO 9001:2008.