Drainage board EPS

EPS board with or without non-woven fabric for drainage and insulation of basement walls

For warm, cozy basements

Basements are often used for living, which demands thermal insulation and comfort. Exterior insulation is the best solution, which is why our EPS board is diffusion open to remove water and moisture. Made of EPS with first-rate thermal properties. It protects against heat, cold and moisture, which help lower heating costs. EPS is 98% air, which makes it extremely light.

Drainage board S80 with fabric

Allows interior moisture to escape and stops exterior moisture. It keeps the foundation wall dry and warm and improves the indoor climate. The board has a special seam that simplifies assembly and minimizes the risk of thermal bridges and downdraughts. The attached non-woven fabric prevents backfill from clogging the drainage grooves.

Drainage board S80/S200

Grooved EPS board that should be provided with a non-woven fabric to prevent backfill from clogging the drainage grooves. S80 is recommended for depths 0-2.5 meters and S200 below 2.5 meters.

100% recyclable

EPS is 100% recyclable and at BEWI we collect, compress and extrude used EPS and reuse it as raw material for new EPS. It’s a closed-loop that saves natural resources, minimize waste, lowers CO2 emissions and water use.




Against heat, cold and moisture


Made of 100% recyclable EPS

Diffusion open

Allows interior moisture to escape and stops exterior moisture

Light and easy

Low weight and easy to install


Specification Standard Unit With woven-fabric S80 S200
Compressive strengthEN 826kPa8080200
Permissible long-term load at 2% deformation (nominal load)EN 1606kPa242460
λD declared valueEN 13164W/mK0,0380380,034
Water absorption, immersedEN 12087Vol%0,5-4,00,5-4,00,5-4,0
Length extension coefficient 10-6 m/m0C707070
Max. Temp. 808080
Fire propertiesEN 13501-1 FFF
Relative water vapor resistanceEN 10456u factor   
Tolerance Length and widthEN 822mm+- 0,6%+- 0,6%+- 0,6%
Tolerance Thickness (class)EN 823mm+- 2+- 2+- 2
Tolerance FlatnessEN 824mm/m151515
Tolerance Right angleEN 825mm/m+ 5+ 5+ 5