BK FLEX-1K
Rubber-bitumen based, UV-resistant waterproofing material
A polymer-modified bitumen-rubber based, single-component, highly elastic (1000%) waterproofing product. Easily applied by brush, trowel or spray machine, it provides a permanently flexible waterproofing layer.
Areas of Use
- On foundations and shear walls
- In wet areas and on retaining walls
- On horizontal and vertical surfaces
- As a repair product on roofs, in concealed gutters and around chimney bases
- In the repair of bituminous membranes
- In the protection and waterproofing of buildings and building elements exposed to seepage water and temporary or permanent water pressure
- In the external waterproofing of water tanks, and in waterproofing over basements and car parks
- Can be used for bonding insulation and drainage boards.
Advantages
- Easy to prepare and apply.
- A UV-resistant product.
- Provides seamless, monolithic waterproofing.
- Bonds fully to the application surface.
- Has high crack-bridging capability.
- A water-based, environmentally friendly product.
- Can be applied on vertical and horizontal surfaces without sagging.
Packages & Quote
In plastic pails, 5-20 kg
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| Package | Qty | |
|---|---|---|
| 5 kg plastic pail | ||
| 20 kg plastic pail |
| Consumption | Total theoretical consumption is 1.50-2.00 kg/m². |
|---|---|
| Shelf Life | Can be stored for 12 months in its unopened original packaging in dry environments at temperatures between +5°C and +25°C. Opened packages must be used immediately. |
Application
Surface preparation: The application surface must be sound, dry, clean and free of loose particles. Sharp points and edges on the surface should be rounded off with an angle grinder and deep voids filled with repair mortar. Internal corners and wall junctions should be chamfered. The application surface should be primed with a solvent-free bitumen primer, and application should begin only after the primer has dried completely. Surfaces that would reduce the adhesion of the material should be roughened. Priming: The product can be used as a primer diluted with water at a ratio of 1/5. The material should be spread evenly with a suitable brush, without allowing material to accumulate on horizontal surfaces. Allow the primer to dry and then proceed with the main application. A consumption of 0.25 kg/m² is recommended. Application: Apply at least 2 coats to the prepared surface by brush, trowel or spray. After the first coat has been applied, it must be fully dry before the second coat is applied. The second coat should be applied perpendicular to the first. Application tools: roller or brush.
Technical Properties
| Composition | Polymer-modified bitumen rubber |
|---|---|
| Colour | Black |
| Density (A / A+B) | 1,20 kg/l |
| Mixing ratio (A+B) | 30 kg |
| Solids content (A / A+B) | 70% |
| Application temperature | +5°C 35°C |
| Service temperature | -20°C 80°C |
| Full drying | 1-5 days |
| Watertightness (EN 15820) | W2B (duration: 72 h, pressure: 0.75 bar, dry film thickness ≥ 3 mm, without mesh) |
| Crack bridging (EN 15812) | CB2 (bridged crack: ≥ 2 mm) |
| Flexibility at low temperature (EN 15813) | Pass (duration: 1 h, temperature: 0°C, method: bending in 3 s) |
| Dimensional stability at high temperature (EN 15818) | Pass (duration: 2 h, temperature: 70°C) |
| Water resistance (EN 15817) | Pass (28 days immersion in water) |
| Rain resistance (EN 15816) | R1 (rain test performed 8 hours after application) |
| Reduction in layer thickness (EN 15819) | Pass (must be less than 50%) |
| Fire class (EN 13501-1) | Euroclass E |
| Elongation at break (ISO 37, MIL-STD-810G) | 1000% |
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