ACRtec PU44 Liquid Flashing
ACRtec PU44 Liquid Flashing is a specially designed and created water-based hybrid liquid rubber flashing with an integral synthetic micro-reinforcement. ACRtec PU44 Liquid Flashing has been specifically designed to eliminate blistering and wrinkling which may occur in exposed or ponded situations. It has an added application advantage, it does not require the use of polypropylene, polyester, or chopped strand glass fiber reinforcing fabric. ACRtec PU44 Liquid Flashing provides a fully bonded homogeneous membrane barrier with no laps, joints, or overflashings. It is not affected by UV or temperature extremes and will not become brittle with age. Excellent weather ability virtually unaffected by sunlight, rain, snow, ozone and temperature extremes.
Performance Properties
ACRtec PU44 Liquid Flashing can also be used in fully exposed roofing, waterproofing, balconies, podium decks, landscape areas, ponds, box gutters, planter boxes, and sill flashings. ACRtec PU44 Liquid Flashing provides an excellent moisture barrier under tiles or other rigid surfacing to shower trays, bathroom floors and walls, laundries, kitchens or patios. Most premium quality water-resistant grade ceramic tile adhesive, suitable for application to an impermeable surface, will be compatible with ACRtec PU44 Liquid Flashing. ACRtec PU44 Liquid Flashing membrane system complies with ASTM and BS “Waterproofing of wet areas, RC Roofs, Water Retaining Structures in Buildings”.
Physical Properties
Color: Gray
Composition: Reinforced Polymerized Monomers
Viscosity: 14,000 cps @ 25 °C
Specific Gravity: 1.35
Solids Content: >60% by weight
Tensile Strength (ASTM D412-13): 6.2 N/mm² @ 200% Elongation at Break
Elongation at Break (ASTM D412-13): >950%
Water Vapor Transmission (ASTM E96-05): 0.68 g/h·m²
Adhesion Peel Strength (ASTM D903): 5.7 N/mm
Accelerated Weathering (ASTM G154-16): Passed
Moving Joint Test (CSIRO): Passed
Shore A Hardness (ASTM D2240): 90
Weather Resistance: No cracking and no peeling
Acid Resistance (ASTM D896, Procedure 7.1): Pass (Nitric acid and Sulfuric Acid)
Salt Resistance (ASTM D896): No delaminating, blistering, emulsification, deterioration (20% Sodium carbonate and Calcium chloride)
Resistance to Mold Growth (BS 5980-1980, Appendix B): Excellent
Trafficability: Based on DFT of 1 mm at 25°C, 40% RH
Foot Traffic: 8 hours
Vehicular Traffic: 24 hours
Curing Time: 24 hours
Application Rates
Coverage rate:
30 mils dry thickness
• 200 - 225 ft² per 5 gallon pail
• 18.5 - 21 m² per 19 liter pail
40 mils dry thickness
• 165 - 175 ft² per 5 gallon pail
• 15 - 16 m² per 19 liter pail
Packaging: 5 gallon pail / 19 liter pail