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External Waterproofing

External Waterproofing for New Build Properties

Specifying a waterproof membrane for external surfaces

A new-build structure should be designed and built to be as resistant to water ingress as possible. This would include the installation of an external ‘Type A’ barrier to the ‘Type B’ structure.

Exterior waterproofing is also known as ‘positive side’ waterproofing since it deals with the source of water or hydrostatic pressure. It relies on a continuous waterproof membrane to prevent water from entering the basement.

When waterproofing protection has to be as robust as possible, we use ‘Type A’ external waterproofing. This is compliant to the British Standard code of practice BS8102:2009, providing a secondary (or tertiary) barrier to the entry of water. The important word is ‘barrier’ because external waterproofing protects against water ingress by applying an impermeable barrier to the external/internal or both faces of the structure.

We are able to select from a range of ‘Type A’ waterproofing materials available from different manufacturers according to their suitability for the project. Since the face of the wall cannot be accessed after waterproofing, the water proofing build-up has to be carefully scheduled with the main contractor as the structure is formed. We have to be flexible and reactive to prevent delays on site, and we are proud to have an unrivalled reputation for co-operation and ease to work with.

The following case studies include examples of projects where an external waterproofing system was the optimum solution. Please contact us to discover how we can help with your basement conversion project.

Read our External Waterproofing Case Studies

Browse our case studies to see the full range of External Waterproofing projects we have undertaken.

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