wedi building board Vapor is a composite element made from extruded polystyrene rigid foam which is reinforced on both sides with a special cement coating, with a vapour barrier on one side.
For rooms where there is a permanently raised level of humidity
For walls, ceilings and floors
Vapour barrier and thermal insulation
Vapour barrier (sanded epoxy-resin vapour barrier) - 1,5 mm
Diffusion equivalent air layer thickness, sd value (epoxy resin vapour barrier) - 283 m
Resistance to water vapour diffusion(µ) - EN 12086 188571
Fire behaviour EN 13501 - E
Technical properties – Rigid foam
Long-term compressive strength (50 years) ≤ 2% compression EN 1606 - 0,08 N/mm2
Compressive resistance or compressive strength at 10% compression EN 826 - 0,25 N/mm2
Associated modulus of elasticity EN 826 - 10 – 18 N/mm2
Tensile strength EN 1607 - 0,45 N/mm2
Shearing resistance EN 12090 - 0,2 N/mm2
Shear modulus EN 12090 - 7 N/mm2
Bulk density EN 1602 - 32 kg/m3
Resistance to water vapour diffusion(μ) EN 12086 - 100
Water absorption under long-term immersion EN 12087 - ≤ 1,5 Vol.-%
Capillar action - 0
Linear coefficient of thermal expansion - 0,07 mm/mK
Temperature limits - -50°C / +75°C
Fire behaviour EN 13501 - E
Propellant gas, carbon dioxide, GWP value - 1
The wedi building board Vapor may be used as heat insulation, while at same time, because of the coating applied in the factory; as a vapour barrier in rooms with permanently high humidity.
Particularlwhen used for wall areas it is one of the best carrier elements on the market - especially when used for public shower and spa facilities.