Repair the defect rather than coating over it

Waterproof paint on the inside may hide staining temporarily while the wall continues to become wet from outside. That can move the evaporation zone elsewhere and leave the original fabric saturated.

Match pointing and render to the wall

On older solid masonry, very dense cement-rich repairs can alter how the wall takes up and releases moisture. Compatibility matters as much as appearance.

Allow for retained moisture

A thick wall that has been wet for months will not become dry as soon as the external repair is complete. Drying time depends on thickness, season, ventilation and finish.

Compare quotes before deciding

Once you have a reasonable idea of what may be causing the damp, you can ask local damp-proofing contractors for quotations through MyJobQuote.

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