Koster KSK SY 15 consists of a highly tear resistant, 2-layer cross- laminated, polyethylene foil with a plastic bitumen / rubber adhesive- and sealing-compound. It is cold applied and therefore no hot air or propane gas welding is required for application. Due to its high ductility, it can also be easily applied to difficult details. The sealing membrane is highly flexible, immediately waterproof, resistant to driving rain and crack bridging. Koster KSK SY 15 is radon proof.

Technical data

  • Thickness according to DIN EN 1849-12: 1.5mm

  • Length according to DIN EN 1848-12: 20m

  • Width according to DIN EN 1848-21: 1.05m

  • Straightness according to DIN EN 1848-1:  = 20mm / 10m

  • Flammability according to DIN EN 13501-1: Class E

  • Tensile strength according to DIN EN 12311-1: 250 ± 50 N / 50mm

  • Elongation at break according to DIN EN 12311-1: 200 ± 50%

  • Waterproof 60 kPa according to DIN EN 1928: passed

  • Resistant to static loads DIN EN 12730 procedure B: > 20 kg

  • Resistance against artificial aging according to DIN EN 1296 and 1928, procedure. B (test pressure 60 kPa): passed

  • Resistance against chemicals according to DIN EN 1847 and 1928 procedure B (Test pressure 60 kPa)
    - 10 % NaCl: passed
    - Lime milk: passed
    - 6 % Sulfuric acid: passed

  • Resistance to water vapour diffusion: < 130,000

  • Resistance to continued tearing lengthwise / crosswise according to DIN EN 12310-1: 150 N ± 50 N

  • Cold bending properties according to DIN EN 1109: < - 30°C

  • Resistance of the joint seams to shearing according to DIN EN 12317-1: 130 ± 30 N / 50mm

Applications

  • Waterproofing horizontal and vertical surfaces of structures and / or structural members according to DIN 18195 such as foundation plates, wet rooms, basement floors, balconies and terraces.

  • Also suited for waterproofing polystyrene elements.