Harrison Waterproofing is an authorised and recommended installer for the two leading methods of internal waterproofing systems in Britain.

Where the water pressure is particularly high, where noise and dust are likely to cause concern or where it’s required to retain the existing features of a building, we generally recommend a Cavity Drain Membrane (CDM) system, to control damp or water ingress.

With a CDM system any moisture is allowed to pass through the masonry. Thereafter it’s controlled by the use of a waterproof, ‘eggbox’ design, High Density Poly Ethylene membrane, attached to the masonry.

Once an area is waterproofed, we can either render directly on to the CDM or provide a ‘dry line’ plaster finish.

Where there is not a gravity fed option, the Cavity Drain Membrane system is supported by pumped system.

Cavity Membrane

This extremely effective system utilises an ‘egg box’ style design.
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Concrete Repair

We have processes to prevent damp or water penetrating walls.
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Dry & Wet Rot

Wet Rot can usually be dealt with by removing the source of dampness.
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Epoxy Resin

One of our fail-safe techniques is the use of Epoxy Resin Repair.
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Rising Damp

This is an aspect of home ownership that affects millions of properties in the UK.
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Tam Injections

Harrison Waterproofing are authorised TAM injection repair specialists.
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With a CDM system any moisture is allowed to pass through the masonry.
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We are able select the most appropriate treatment where Woodworm is found.
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