This standard BS EN 17872:2023 Flexible sheets for waterproofing. Underlays for discontinuous roof coverings. Artificial ageing procedure is classified in these ICS categories:
91.100.50 Binders. Sealing materials
This document specifies a procedure for artificial ageing of flexible underlays which are used under discontinuous roof coverings. This is achieved by exposing test samples to UV-radiation, elevated temperature in combination with high relative humidity and elevated temperature in combination with accelerated air-speed.
