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Waterproof Garage Roof UV Resistant Liquid Rubber Membrane:  

     

Duraroof - Double crosslinked copolymer membrane for roof waterproofing AS4858:2004 compliant CLASS III

 

Duraroof is a liquid membrane product based on a unique double crosslinked copolymer system. It does not contain plasticisers or oils that can leach, degrade or contribute to dirt-pickup. Duraroof is used as a fully exposed membrane or beneath a tiled mortar bed. It can withstand occasional light foot traffic. The product is water-based yet offers strong resistance to water ponding. The cured membrane has exceptional flex and elasticity for good crack bridging properties while at the same time maintaining good tensile film strength. Duraroof has excellent resistance to UV, colour fade and chalking. Duraroof membrane is easily maintained, recoated and repaired .The water content is low which enables fast drying, and thick films to be built up quickly. The product is supplied as a thixotropic liquid, which is easily applied to both vertical and horizontal surfaces. It complies fully with the test requirements of AS:4858-2004 "Wet Area Membranes" and passes at Class III, the highest level in the Australian standard.

 

PRINCIPLE CHARACTERISTICS

 

Single component, water-based

Excellent water resistance

UV resistant

High Solids

Ease of application - roller / spray / brush

Excellent adhesion to concrete, brick, FC sheeting and render.

Exceptional elongation

Non-hazardous, low odour

Does not bleed, non-staining

 

TECHNICAL DETAILS:

 

Colour

Pale Grey (other colours on request)

Weather Resistance

Excellent, pass +1000 hrs QUV Weather-ometer, 2000 hrs UVa

Dry Time

2-4 hours @ 25 C, 50% R.H.

Recoat Time

4-6 hours @ 25 C, 50% R.H.

Coverage

Total 2.0 litre/sqm min. Apply as 2 or more coats, each coat at 1.0 litre/sqm

Dry Film Thickness

As a basecoat, total 1.0 litre/sqm minimum as 1 to 2 coats.

Elongation

1.2 mm minimum

Tensile Strength

+ 550% @25 C 1.3MPa @25 C

Solids Content

60% by volume

Shelf Life

8 months in unopened containers @ 20 C

VOC

9.0 g/L  Green  Building Council Compliant

 

USE AREAS:

 

Exposed roofs

Decks

Parapet walls

Topcoating mineral surfaced bitumen coatings

Basecoat for heavier traffic or solar coatings

 

 

INSTALLATION  CONDITIONS

 

It is generally accepted as good practice for "flat roofs" to be designed to clear surface water as rapidly as possible. Ensure that the roof area has adequate drainage and fall, preferably at least 1.25%, i.e. 12.5 mm fall in 1 metre. Use a sand & cement screed to ensure adequate drainage and to fill all low spots that will not drain freely. A brush or wood float finish to concrete surfaces is ideal for adhesion. If used to waterproof beneath tiled mortar beds, a Duraroof to dry thoroughly between coats. In winter & autumn, application in the warmest part of the day is recommended. Do not apply Hibuild WBE primer or Duraroof below 10 C ambient. Do not apply Duraroof above 30 C or in hot windy conditions. Excessively thick application in hot windy conditions is not advised. Do not apply during wet weather conditions, or if impending rain is likely.

 

SURFACE PREPARATION

 

Good surface preparation is essential for optimum performance. Concrete that has been trowel finished to a smooth surface must have all laitance removed. Remove all dust, loose particles, contaminants and curing compounds. Use sugar soap detergent and water followed by thorough rinsing to clean old concrete and other surfaces such as mineral topped bitumen. If necessary water blast un-sound or powdery concrete surfaces. Fill and treat all voids, dents and non-moving cracks. Consult Wrimco for technical advice regarding moving joints and cracks. Concrete must have a minimum strength of 20 MPa and be cured a minimum of 28 days. Ensure surfaces after preparation are as dry as possible before priming.

 

PRIMING & DETAILING

 

Prime with Duromix Hibuild WBE, following the product’s technical data sheet. It is essential that the application of the primer is carried out correctly. Allow the final coat of primer to dry thoroughly overnight. Next, apply PU Sealant at all horizontal and vertical junctions such as floor to wall, and wall to wall. Apply a neat smooth fillet about 12mm x 12mm. Remove all sealant residues and overhangs. The sealant can be coated after a good skin has formed (approx. 1 hour).

 

APPLICATION

 

Ensure that the primer is thoroughly dry and cured. Apply Duraroof by brush/roller or airless spray in at least two or more coats to achieve a total minimum dry film thickness of 1.2 mm. Do not apply in one thick coat. Allow to dry as long as possible between coats. When dry check for pinholes and thin areas, and recoat if necessary. If membrane becomes dirty or damaged between coats, clean with water and recoat. Spills and tools should be cleaned with water before Duraroof has dried.

 

TOP COATING WITH OTHER FINISHES

 

DURAROOF is ideal as a basecoat as it has very high elongation to absorb movement and bridge cracks.

 

DURAROOF can be top coated with:

 

Duro AC to provide a range of colours.

Duro SR to provide a proven solar reflective cool temperature surface.

Duro AC Non Slip for a fully foot trafficable surface

 

MAINTENANCE

 

Coating maintenance is based on regular inspection and then timely repair of any damage and deterioration by thorough cleaning using a little sugar soap and water, followed by thorough rinsing. When dry, apply Duraroof

 

 

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