D-FLEX® BITU
Two component, polyurethane-bitunimous liquid waterproofing membrane.
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D-FLEX® BITU
Description
D-FLEX® BITU consists of hydrophobic polyurethane resins (component A) and bitumen (component B). The final membrane formed from the mixing and reaction of the two components, has high elasticity and mechanical properties , and has excellent high chemical resistance.
Application Fields
- Recommended for: basements (foundations), garden roofs, non-drinking water tanks, irrigation channels, under tiles (after application of quartz sand in the last layers) in kitchen, bathrooms, balconies, flat roofs, under thermal insulation boards on flat roofs, in technical road construction works for the waterproofing of deck-bridges, in tunnels etc., as well as for application on asbestos sheets, metal sheets, gypsum-boards, cement-boards, and polyurethane foam.
Advantages
- Excellent adhesion to any type of substrate, even without the application of primer
- Continuous, elastic membrane without seams and joints
- Application on a non-smooth substrate
- No application thickness limit
- Mixing 1:1 by volume
- Extremely quick drying (polymerization)
- Crack-bridging
- Joints sealant ability
- Maintains its mechanical properties from - 40°C up to 90°C
- High elongation and tensile strength
- Excellent resistance to chemical attack
- Water vapor barrier
- Resistant to water, even to seawater
- In case of membrane damage, it is repaired locally with the same material without removing the existing one, in a few minutes
- No need of flame (torch) during application
Application Steps
On concrete surfaces, discontinuities or cavities must first be filled with repair material, while large cracks must be primed with DESMOFLEX® EPOXY PRIMER. Next they are sealed with polyurethane mastic ELASTO PU before applying the product. All porous surfaces must be primed before application. In the case of new concrete surfaces, priming is not considered necessary.
Step 2On smooth, non-absorbent surfaces, as well as on bituminous membranes and old waterproofing layers, priming with DESMOFLEX® EPOXY PRIMER precedes.
Step 3Apply the mixture on the surface by roller, brush or teeth trowel, 6-12 hours after the applications of the primer and no more than 24 hours, and while the surface is still sticky, until the desired surface is fully covered. After 6 to 24 hours, apply the second layer of D-FLEX® BITU. For high demanding surfaces, you can apply a third layer.
Step 4If the product is going to be covered with tiles , before the application and while the last hand is still wet, fully saturate the surface with quartz sand (0,3-0,8 mm). This will create and adhesion bridge to the tile adhesive.