CEN/TC 254/WG 4 - Water vapour transmission, water tightness and root resistance
To develop general test methods applicable to bituminous and synthetic sheets for waterproofing in respect of watertightness, water vapour transmission and root resistance.
Water vapour transmission, water tightness and root resistance
To develop general test methods applicable to bituminous and synthetic sheets for waterproofing in respect of watertightness, water vapour transmission and root resistance.
General Information
This European Standard specifies a method to determine the resistance of roof waterproofing sheets to root penetration.
This European Standard relates exclusively to sheets. It is not possible to test a system comprising several different sheets.
This European Standard does not contain any evaluation of the sheet to be tested in respect of its environmental requirements.
- Standard14 pagesEnglish languagee-Library read for1 day
This European Standard specifies a method for the determination of the water vapour transmission properties and for the calculation of the density of moisture flow rate g and of the moisture resistance factor µ of waterproofing sheets. It is applicable to factory made bitumen, plastic and rubber sheets for roof waterproofing.
- Standard12 pagesEnglish languagee-Library read for1 day
This European Standard specifies the equipment and procedures for determining the watertightness, i.e. the resistance to ponding water or to hydraulic pressure absorbed by a limited part of the surface, of factory made products. It is applicable to bitumen, thermoplastic and elastomeric sheets.
- Standard8 pagesEnglish languagee-Library read for1 day
Frequently Asked Questions
CEN/TC 254/WG 4 is a Working Group within the European Committee for Standardization (CEN). It is named "Water vapour transmission, water tightness and root resistance" and is responsible for: To develop general test methods applicable to bituminous and synthetic sheets for waterproofing in respect of watertightness, water vapour transmission and root resistance. This committee has published 3 standards.
CEN/TC 254/WG 4 develops CEN standards. The scope of work includes: To develop general test methods applicable to bituminous and synthetic sheets for waterproofing in respect of watertightness, water vapour transmission and root resistance. Currently, there are 3 published standards from this working group.
The European Committee for Standardization (CEN) is a public standards organization that brings together the national standardization bodies of 34 European countries. CEN provides a platform for developing European Standards (ENs) and other technical documents in relation to various products, materials, services, and processes, supporting the European Single Market.
A Working Group in CEN is a specialized group responsible for developing standards or technical work within a defined scope. These bodies bring together international experts to create consensus-based standards that support global trade, safety, and interoperability.