D.88W 1K PU Liquid Waterproofing Membrane for Exterior Use
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Description
1K PU waterproofing in grey for exterior use - fast-curing, solvent-based, latest-generation 1K polyurethane liquid plastic. For fleece-free detail waterproofing outdoors. The "Humidity Activated Accellerator" technology enables a bubble-free, cold-processable, and cold-curing polyurethane membrane.
The D.88W liquid plastic waterproofing and coating system is weather-, UV-, and hydrolysis-resistant, thus ensuring permanent protection of the building fabric. The proven technology of polyurethane in combination with the new catalyst system now enables us to incorporate the moisture-reactive catalyst. This cross-links very quickly even in thick layer thicknesses with the moisture of the environment to form a bubble-free membrane.
Waterproofing for flat roofs and other surfaces on concrete, screed, reinforced concrete, steel, stainless steel, tiles, bitumen* and membrane renovation (EPDM, PVC FPO / TPO) as well as waterproofing and detail waterproofing for balconies, terraces, in timber construction, for railing supports, etc.
Certified waterproofing system - ETAG 005 approval, W3.: Technical approvals for liquid-applied waterproofing. Meets the highest requirement level for service life.
+ bubble- and defect-free surfaces
+ rapid through-curing
+ weather- and UV-resistant
+ continuously load-bearing up to +90°C. 200°C shock temperature.
+ excellent mechanical properties due to high stretchability, tensile and tear strength
+ good chemical resistance
+ vapor-permeable membrane
+ for airless application, it can be diluted with LS-711 by 5-10%
Matching auxiliary products
- BEKATEQ BK-637PU 1K PU primer for exterior use
- BEKATEQ BK-636PU 2K PU primer for bitumen or asphalt
- DICHTON D.89W 1K PU waterproofing exterior fiber-reinforced
- BE-79W short-pile paint roller
- BK-705 quartz sand for sprinkling
- LS-711 thinner
- BE-800 floor cleaner
Areas of application
- Flat roof waterproofing
- Basement and foundation waterproofing
- Insulation in roof, wall, and basement areas
- Floor coatings indoors and outdoors
- Waterproofing in sanitary areas (e.g. showers, etc.)
- Pool, drinking water, and container coatings
- Crack injection
- Highly elastic joint sealants
- Stone resin flooring for indoor and outdoor areas
Detail waterproofing / waterproofing of complex components
- Wall and floor connections
- Pipe penetrations
- Skylights
- Connections
- Sleeves and corners
- Flashing frames
- Gutters
- Piping
Technical data
- Consumption: min. 1.5kg/sqm, for commercial use 2.6kg/sqm is recommended
- Application temperature +5 to +35°C
- Dew point: the temperature must be min. >3°C above the dew point
- Application: brush, squeegee, paint roller, or airless application
- Drying time at 20-25°C: Tack-free after approx. 2-3 hrs / Recoatable after approx. 6-12 hrs.
Substrate: Substrates must be load-bearing, free of separating layers, cracks, loose parts, voids, and burrs. Remove grease, wax, cement slurry, and all other adhesion-reducing substrates. Grind the substrate using diamond grinding discs, sand, or shot blast. Load-bearing bituminous substrates as well as membranes (EPDM, PVC, FPO / TPO) must be thoroughly cleaned with a high-pressure water jet beforehand. Then the substrates are treated with the BK-637PU 1K PU primer or the BK-636PU 2K PU primer for bituminous substrates.
Adhesion pull-off and compression strength >1.5N/mm²
Moisture in the substrate < 5%
Relative ambient humidity < 80%
Application: Wear appropriate protective clothing during application, such as: safety goggles, disposable gloves, and if necessary, respiratory protection masks. For airless application, add 5-10% LS-711 thinner beforehand and mix it in using a dissolver. Apply the material evenly. Depending on the levelness and roughness of the substrate, min. 1.5kg/sqm is required. Apply approx. 2/3 of the quantity in the first coat. Apply the rest wet-on-wet until it is glossy.
If you are working according to the European waterproofing standard, you need 2.6kg/sqm. Optionally, you can embed our system fleece bubble- and wrinkle-free. Recoat the system fleece wet-on-wet with the remaining quantity until it is glossy. Matte surfaces indicate too thin a layer thickness. If you want to recoat the D.89W, this layer must be sanded with sandpaper.
Technical specifications
| Property | Value |
|---|---|
| Recoatable after | approx. 6-12 h |
| Consumption | 1.5 kg to 2.6 kg/m² |
| Application | Roller, brush, spraying |
| Certified waterproofing system | ETAG 005 approval, W3 |
| Properties | Bubble-free and defect-free surfaces, rapid through-curing, weather- and UV-resistant, +90°C continuous load, 200°C shock temperature, excellent mechanical properties thanks to high elongation, tensile strength and tear resistance, good chemical resistance, vapour-permeable membrane |
| Substrate | Concrete, screed, reinforced concrete, steel, stainless steel, tiles, bitumen and membrane refurbishment, as well as waterproofing and detail waterproofing for balconies, terraces, timber construction and railing posts |
| Application temperature | +5 to +35°C |
| Colour | Grey |
| Thinning / tool cleaning | LS-711 PU thinner |
| Area of use | Exterior |
| Typical use | Flat roof waterproofing, basement and foundation waterproofing, insulation in roof, wall and basement areas, waterproofing in sanitary areas, coatings for pools, drinking water tanks and containers, detail waterproofing such as connections, gutters and more |
Recommended Layering
Areas of application
Frequently Asked Questions
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