Thermal insulation VAPOR
extruded polystyreneexpanded polystyrenepolystyrene

thermal insulation
thermal insulation
thermal insulation
thermal insulation
thermal insulation
thermal insulation
thermal insulation
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extruded polystyrene, expanded polystyrene, polystyrene, fiberglass
wall-mounted, interior, for partition walls
Technical characteristics
high-performance, waterproof
Fire Class
Euroclass E
with vapor barrier, lightweight, VOC-free, low-VOC, fiberglass-reinforced
Thermal conductivity

0.036 W/(m.K)

Thermal resistance

0.3 m²K/W, 0.51 m²K/W, 1.37 m²K/W


2,500 mm (98 in)


600 mm (24 in)


14 mm, 21.5 mm, 51.5 mm (0.55 in)


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.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.