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Building board Vapor

Building board Vapor

„The special building board for rooms with high humidity.“

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

Technical data of building board Vapor


Dimensions 600 x 2500 mm
Thickness 14 mm, 21,5 mm, 51,5 mm
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
Thermal conductivity EN 13164 0,036 W/mK
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

010713112 wedi building board Vapor 12,5 mm 2500 x 600 x 12,5 mm
010713020 wedi building board Vapor with vapour barrier 20 mm 2500 x 600 x 20 mm
010713050 wedi building board Vapor with vapour barrier 50 mm 2500 x 600 x 50 mm

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Construction panels for rooms with high humidity: wedi building board Vapor

  • 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. It is also suitable for tile and plaster carrier element.

wedi building board Vapor

Building board Vapor Building board Vapor

Impressions of building board Vapor

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