PHS Sd Variable Membrane

PHS Sd Variable Membrane is a multi-layered vapour barrier with a moisture-variable sd value. It’s used indoors to create an airtight barrier and a vapour control layer for the protection of the construction according to DIN 4108.


PHS Sd Variable Membrane is a reliable airtight and vapour control layer. During the winter it reliably prevents diffusion of interior humidity into the roof and wall construction. As a result – during summer it allows for back fusion from the insulation as well as the wall and roof construction. It also prevents condensation that facilitates mildew growth and constructional damages.


Composite of a functional PA film and PP non-woven,

Outstanding ageing resistance,

UV resistant: at least 18 months behind glass and three months in outdoor exposure*.




White with print

Special Features

Fulfills the requirements of the EnEV as a moisture-variable vapour barrier,

Especially useful for new buildings as well as for renovation of old buildings,


The CE sign according to DIN EN 13984 provides the necessary security for the application in constructions to build according to all valid requirements of the EnEV and construction standards.