Koster SL FLEX - Self-Leveling Underlayment (Wood & Tile) - 50 lb Bag - SL 284 025
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Flexible self-levelling underlayment for wood, and tiled substrates.
Key Features
- Excellent bonding characteristics on various surfaces: wood, tile, steel, concrete, screed.
- Early loadable mineral based underlayment for tiled surfaces.
- High flexibility: accommodates movement in the wooden substrate as well as high point loads.
- Stabilizes the surface due to its high flexural strength.
- Resistant to foot traffic after approx. 4 hours (depending on temperature)
- Can be tiled over after approx. 6 hours (depending on temperature)
- Application of parquet, carpet, synthetic flooring after 48 – 72 hours (depending on temperature)
- Low viscosity and self-levelling during its pot life.
- Can be applied in layer thicknesses between 2 and 15 mm, in depressions up to 30 mm
- Hardens quickly and tension free.
- Easy to install.
- Pump- and pourable.
- Ideal for changes in use and renovations.
Technical Data
| Pot life (DIN EN 16945 | approx. 20 min. (+ 20 °C) |
| Application temperature | + 5 °C to + 30 °C |
| Bulk density (powder) | approx. 1.3 g / cm³ |
| Initial set | > 60 min |
| Final set | < 120 min. |
| Compressive strength (28 days) | approx. 30 N / mm² |
| Bending tensile strength (28 days) | approx. 10 N / mm² |
| Tensile strength (depending on substrate) | up to 3 N / mm² |
| Resistant to foot traffic | after approx. 4 hours* |
| Can be tiled over | after approx. 6 hours* |
| Application of Parquet, Carpet, synthetic flooring | after 48–72 hours* |
| Water requirement | 5.2 l per bag |
| Layer thickness | 2 mm bis 15 mm |
| Layer thickness in depressions | up to 30 mm |
| Layer thickness on smooth surfaces | up to 15 mm |
| Consumption | approx. 1.6 kg Powder / m² / mm layer thickness |
| *depending on temperature |