20.60 Close of comment period Sep 1, 1988
CEN
CEN/TC 117 Thermoplastic and elastomeric roofing and sealing sheeting
European Norm
To specify a method for the determination of the water vapour transmission rate (WVT) and for the calculation of the water vapour diffusion resistance coefficient of thermoplastic and elastomeric roofing and sealing sheets.
IN_DEVELOPMENT
CEN/TC 117 N 61
20.60
Close of comment period
Sep 1, 1988