THE IMPORTANCE OF A WATER FLOW REDUCING LAYER (WFRL) IN INVERTED ROOFS
The inclusion of water flow reducing layers (WFRLs) in inverted flat roof build-ups is so widely accepted that it might surprise people to realise they are, in fact, an optional component of the roof system. However, such is the effectiveness of a WFRL in that system that the membrane’s removal from a specification would significantly … Read more
