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    foil/barrier membrane - Vapour barrier

The layer in a building component which reduces the diffusion of water vapour in the construction. A vapour barrier is defined by the vapour diffusion equivalent air layer thickness (sd), which defines the thickness of an air layer providing the same resistance to vapour diffusion as a layer of a material with the thickness d, and the vapour diffusion resistance µ as given by sd = µ . d [m]. A layer in a building component with a vapour diffusion equivalent air layer thickness sd ≥ 1500m is by definition a vapour seal. Membranes possessing a diffusion equivalent air layer thickness which depend on the relative humidity are called moisture adaptive vapour barriers.
   
       
     
 
Manufacturer of moisture-adaptive vapour retarders
 
Product Manufacturer Product information
Airstop DIVA FORTE Isocell GmbH DoP/tech. Information/CE (pdf, 507KB)
Vario KM Saint-Gobain Isover Austria GmbH DoP (pdf, 600KB)
Wütop Thermo Vario SD Würth HandelsgesmbH DoP/techn. Information (pdf, 622KB)
 
Manufacturer of vapour retarders acc. EN 13984 sd ≤ 10m
 
Product Manufacturer Product information
ÖKO-NATUR Isocell GmbH DoP/techn. Information/CE (pdf, 509KB)
Wütop Dampfbremse DB2 Würth HandelsgesmbH DoP/techn. Information (pdf, 1147KB)
 
Manufacturer of vapour retarders acc. EN 13984 sd ≥ 10m
 
Product Manufacturer Product information
Wütop Dampfbremse DB10 Würth HandelsgesmbH DoP/techn. Information (pdf, 1280KB)
Wütop Dampfbremse DB20 Würth HandelsgesmbH DoP/techn. Information (pdf, 1223KB)
Wütop Dampfbremse DB 155 Würth HandelsgesmbH DoP/techn. Information (pdf, 255KB)
 
Manufacturer of vapour barriers with sd≥ 1500m
 
Product Manufacturer Product information
Wütop Dampfsperre DS Alu Würth HandelsgesmbH DoP/techn. Information (pdf, 1088KB)