RIW LAC® (Liquid Asphaltic Composition) is a cold-applied bitumen-based waterproofing and radon barrier coating with a track record of nearly a century in the construction industry. Formulated as a solution of natural and petroleum bitumens in white spirit, it dries to a uniform gloss black finish and can be applied quickly and easily by brush, roller or spray. Designed primarily for use on structures below ground level, LAC® is ideal for external and internal tanking, retaining walls and ground floor damp proof membranes. It can also be used on superstructures as a vapour barrier behind cladding systems and plaster finishes. When correctly applied, LAC® meets the performance requirements for Grade 1, 2 and 3 basement protection under Type A structures as classified in BS8102:2009. It also provides an effective barrier against radon gas and is sulphate resistant, making it well suited to challenging ground conditions. Benefits Quick & easy to apply using a brush, roller or spray Effective barrier to radon gas Sulphate resistant Suitable for internal and external tanking Ideal for retaining walls. Ideal ground floor DPM Acts as a water and water vapour barrier Elastic and flexible Good to know Can be applied to concrete masonry & steel It is also suitable for waterproofing, foundation walls, ducts, lintels, columns, beams and similar structures at, above and below ground level Will not crack or peel provided it is protected from mechanical damage and exposure to U.V J30 - Liquid Applied Tanking/Damp Proofing in accordance with NBS Clauses BBA certified for the tanking of basements and as a damp proof membrane for solid floors.
