LAC
RIW LAC is a two coat, cold applied bitumen damp proofing membrane, which dries to a uniform gloss black finish. It is typically used as a tanking membrane in accordance with BS8102:2009, damp proof membrane to ground floors and as a vapour barrier behind cladding and plaster. RIW LAC can also be used as an effective barrier to Radon Gas.
When designing Type A structures (as classified in BS8102:2009), the product applied correctly, is capable of providing the levels of protection required for grades 1, 2 & 3 basements.