Belgavar is a vapour control layer and air tightness membrane with humidity variable sd-value (0.8m < sd < 6.0m). It is a high density ecological membrane, made of kraft paper with a glass fibre mesh for reinforcement and a polyolefin copolymer layer for the humidity variable vapour control.
Belgavar is heavier than the most standard air tight membranes and has outstanding performance values for tensile strength.
The membrane can be used in conjunction with ecological insulation material, to create the required insulation/ air tightness layer in old buildings like cottages or heritage buildings.
We recommend the Belgatape YELLOW for taping the overlaps.
Dimension (EN 1848-2): 50 m x 1,35 m / 67.5 m²
Weight (EN 1849-2): 200 ± 10% g/m²
sd value (EN 1931): 0.8 m < sd < 6.0 m
Fire class (EN 13501): class E