Rising Damp.

For buildings built with walls thicker than 400mm or of chalk, cob, flint or friable stone we would recommend ventilated cavity membranes.

Cavity Membranes
Ventilated cavity membranes allow buildings to ‘breathe' by letting moisture vapour escape from the surface of the wall through a continuous air gap. They are a form of dry lining but as they are not made of a bio degradable material such as wood or paper ( on plasterboard ) they cannot decay and will last the lifetime of the building.

The inside of the property is left completely dry and warmer while the structure is breathing as it should do. There are a range of finishes that can be applied over the membranes. LSE plaster over with lime mortar plasters, High Impact one coat plaster and plasterboard adhered to the membrane, so as once plastered you would not know the wall had been lined.

We would not normally install a dpc as they are not very effective in this type or thickness of wall. Re-plastering has to be carried out with dpc injection to complete the damp proofing, The recommended plaster is a strong cement render which is not suitable for chalk or soft friable stone.

If dpc injection is to be installed in a thick stone wall then grouting or injection mortar would have to be considered.

An alternative to dpc injections is the Electro Osmosis system which LSE would be happy to discuss with you.

In ordinary brickwork walls up to 350mm thick we would consider a chemical dpc and re plastering to 500mm above the damp using a moisture and salt resistant plaster.

Aida Cream

Aida cream is an injected DPC which is installed into brick built houses where an old DPC has failed or has been breached or was never installed.

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