View the Delta Membrane entry on BPindex Type C, Cavity Drainage Waterproofing – Delta Membranes Waterproofing Below Ground Structures RIBA Approved CPD Technical Drawings Type C – Drained Protection – Delta Membranes A “cavity drain system” is a structural waterproofing solution that isolates internal wall and floor finishes from water, water vapour and dampness. This article explores cavity drain systems …
