Structural Waterproofing

With Damco SW there is no split responsibility. We Design, install and guarantee, our waterproofing systems across the southwest that comply with BS8102. As an independent company we can choose the best products on the market and integrate them into our waterproofing design

Type A (Barrier)

The British Standard for Waterproofing 8102:2022 is the ‘Code of Practice for Protection of Below Ground Structures Against Water Ingress’ and defines Type A waterproofing as “barrier protection” which is applied to either the internal or external surface of a structure to resist the pressure of water trying to enter the building.

Type B (Integral)

British Standard 8102:2022 defines Type B waterproofing as designing the structure itself to be integrally waterproof and the primary resistance to water ingress.
Nothing provides better primary resistance to water than a well-designed and well-placed reinforced concrete structure, designed in accordance with BS EN 1992 with sufficient steel reinforcement to limit flexural and sectional cracking and therefore produce watertight concrete elements.

The use of correctly designed and installed waterbars at the places where the concrete isn’t, such as at joints and penetrations, will result in a Type B structure that should be fully watertight.

Type C (Drained protection – CDM)

British Standard 8102:2022 defines Type C waterproofing as “drained protection” where water leaking through the structure is accepted into voids and air spaces, created by cavity drain membranes that are strategically placed to the inside of the structure, depressurising the incoming water and safely removing it from the property.

These membranes, coupled with the bespoke sump and pump configurations, backup systems, telemetry, and ancillary options, makes it the most reliable and maintainable waterproofing solution for any habitable space below ground.

Combination Waterproofing

For a more robust waterproofing protection, BS 8102:2022 recommends combining two or more Types of waterproofing. Our CDM System can therefore be preferably combined with our Type A  solutions and / or Type B