ABOUT BASEMENT WATERPROOFING

The most common form of leak in a basement is at the joint between the floor and the wall. This is much more usual than a leak directly up through the floor, and is caused by the build up of water pressure around the basement.

The three main types of basement waterproofing are tanking, cavity drainage, and exterior foundation drains.

Tanking consists of a waterproof material bonded directly to the inside or outside of the basement walls and floor. It produces a waterproof skin all around the basement. Great care must be taken in making any fixings through this membrane, for which special fixings are needed.

In cavity drainage, a dimpled plastic membrane is applied to the walls and floors of the basement. This creates a drained space around the dimples. Water entering that drained space is diverted to a collecting point and is pumped out.

Exterior foundation drainage drains water away from the basement by gravity. It has the advantage that it does not depend on electricity or pumps. This technique is often used in conjunction with a waterproof membrane applied to the basement walls.

LEADING UK SUPPLIERS OF BASEMENT WATERPROOFING

Safeguard Basement Waterproofing. Safeguard Europe Ltd. is a UK-based company which specialises in waterproofing, including basement waterproofing. Its product range includes the Oldroyd range of cavity drainage membranes and Vandex cementitious products for waterproofing. Its ProBor timber treatment products address the effects of damp. Safeguard's offices and factory are at Horsham, West Sussex; it exports worldwide.

Polycrete Basement Waterproofing. Polycrete Basement Systems is a local affiliate of the international Basement Systems Network, based in Connecticut, USA. It specialises in waterproofing treatments, including basement waterproofing.

Delta Basement Waterproofing. Delta offers a range of cavity membranes, made from high density polyethylene. The product is available with stud heights varing from 3mm to 20mm, depending on the volume of cavity required. Delta cavity membranes are intended to deal with basements which are liable to to flooding, or with simpler dampness, contamination or salt problems. The products can be applied to exisitng and new buildings.

USEFUL LINKS RELEVANT TO BASEMENT WATERPROOFING

Basement Information Centre

British Wood Preserving & Damp Proofing Association

Waterproofing.org: advice on basement waterproofing

Wikipedia: Basement waterproofing

DETAILED INFORMATION RESOURCES ON BASEMENT WATERPROOFING

We recommend the following websites, with building product information including manufacturers' specs, standard specifications, and CAD details: Barbour Compendium, RIBA Product Selector Plus, ASC Bricsnet, Building Products Index, British Board of Agrément, British Standards Online.

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