Damp patches caused by failed pointing
Can failed pointing cause internal damp?
Yes. When mortar joints fail, rain penetrates the wall and eventually appears internally as damp patches.
How water enters through failed mortar joints
Water travels through open joints and spreads within masonry, often appearing inside after heavy rain.
Why damp spreads if the cause isn’t fixed
Repeated saturation reduces the wall’s ability to dry out naturally, increasing the affected area.
What problems damp can lead to
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Staining and mould
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Blown plaster
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Reduced insulation performance
How we stop damp at its source
We address the external cause by cement or lime repointing and, where appropriate, applying breathable water-repellent treatments.
This type of damp repair is something we deal with weekly across Ilkley and Otley.
We stop water at source rather than treating internal symptoms.
Frequently asked questions
Should I replaster internally?
No. Internal repair won’t solve external water ingress.
Will damp disappear after repointing?
Once the wall dries out, damp should resolve.
Recent local work -
