Dribond Liquid Flash 1 Grey 4 Litres Acrylic Waterproofing Membrane

A premixed, one-pack, water-based, microfibre reinforced acrylic, flexible, waterproofing membrane that is easily applied with a brush to form a resilient waterproof/ flashing membrane between different building surfaces.
Liquid Flash 1 will remain pliable and elastic and will bridge cracks and smooth irregular surfaces. Can be overpainted with water-based acrylic paints to colour match surroundings. The cured membrane is resistant to UV and mild chemical attack. Conforms to AS/NZS 4858 Class 3 membrane for use in internal wet areas. Internal wet areas must be waterproofed in accordance with AS3740 and local regulations.

Uses

A waterproof membrane for roofs, balconies, retaining walls, planter boxes, internal wet areas (e.g. bathrooms, kitchens, laundries and toilets). A flashing material for roof vent pipes, parapet walls and roof sheeting/tiles. For use on cement render, concrete, brick, block and building boards such as gypsum and cement sheeting on walls and compressed cement sheeting on floors, roof and gutter repairs.

Features

• Easy to apply - apply straight from the bucket
• Permanently flexible microfibre reinforced membrane
• Excellent UV Light resistance
• Excellent adhesion to correctly prepared surfaces
• Bridges cracks
• Can be overpainted with water-based acrylic paints to colour match surroundings
• Available in colours grey and blue

Coverage

(Approximate) Two coats give a final coverage of 2L/m2
(dry film thickness of 1.5mm).

Performance Data

Conforms to AS/NZS 4858
Class 3 membrane
Weather Resistance
Slight chalking after over 5000 hours QUV
Moisture Vapour Transmission
0.001 perms-cm when tested in accordance
with ASTM: E96-66
Tensile Strength (AS/NZS 4858) 1.5MPa
Elongation (AS/NZS 4858) 420%
Adhesion to Substrates (AS1526J)
Aluminium 4.75N/mm2
Mortar 0.57N/mm2
Glass 0.69N/mm2
Exceeds SISIR (Singapore) requirements
for rooftop waterproofing

Specification

The waterproof flashing shall be a microfibre reinforced, water-based, acrylic membrane and have a tensile strength 1.5MPa and 420% elongation, such as Liquid Flash 1 manufactured by Construction Chemicals and shall be applied in accordance with the manufacturer’s instruction.

Surface Preparation

The surface to be waterproofed must be structurally sound and free from dirt, dust, grease, paint, wax, laitance and all other contaminants. Treat surfaces as follows before applying Liquid Flash 1.
Galvanised iron (new) - degrease with xylene or similar and wash clean with water and allow to dry.
Rusty surfaces - wire brush to remove flaky rust and treat with a rust inhibitor.
Timber - prime with a timber primer.
Plastic pipes - roughen area to be coated
with sand paper.
Painted surfaces - abrade with a wire brush
or sand down to obtain a good mechanical key. Scrub thoroughly with detergent and water and allow to dry.
Cement sheet / plaster board and porous surfaces - prime with Primebond.
Masonry - render must be at least 7 days old, concrete 28 days old and a minimum 25MPa. Smooth surfaces (concrete, compressed cement sheet) must be washed thoroughly and allowed to dry. Prime with Primax. Abrade or sand contaminated surfaces to provide a totally clean surface.

Bond Breaker and Reomat

At the junction/joints in building surfaces i.e., floors/walls/walls, wastes etc., apply centrally over the junction, bond breaker tape or a 13mm bead of neutral cure silicone (allow to become touch dry). Apply a 150mm wide thick coat of waterproofing membrane centrally over areas where the bond breaker is applied. Reinforce the wet membrane with 140mm Reomat to guarantee its thickness and performance.