The EN 1931 test standard covers flexible sheets for waterproofing. It is applicable to bitumen, plastic and rubber sheets for roof waterproofing.
The determination of water vapor transmission properties is classified into the following ICS categories:
This European Standard specifies a method for determining the water vapor permeability properties and calculating the moisture flow rate g density and moisture resistance factor µ of waterproofing sheets. It can be applied to factory-made bitumen, plastic and rubber sheets for roof waterproofing.
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