Why does my chimney breast get damp?

Damp chimney breasts commonly result from defective flashings, missing or cracked pot and flaunching, redundant flues with no ventilation, or hygroscopic salts in the masonry. Investigation identifies which applies.

Why do my walls get wet only after heavy rain?

That pattern strongly suggests penetrating damp through an external defect such as failed pointing, cracked render or blocked guttering, rather than an internal cause.

Damp that appears after rain

Penetrating Damp in Bedford

If damp appears or worsens after rain, penetrating damp is a likely candidate — water finding a path through the building fabric from outside to in. Procure Group Ltd traces the water to its source and recommends a proportionate repair.

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A Procure Group specialist applying a breathable water-repellent cream to external brickwork during penetrating damp works in Bedford

Common defects that let water in

Penetrating damp usually points to a specific external defect. Common culprits include:

Cracked or blown render
Failed or missing pointing
Blocked, leaking or overflowing gutters
Defective or disconnected downpipes
Slipped or damaged roof coverings
Chimney and flashing defects
Masonry cracks and spalled brickwork
Window and door junction defects
High external ground levels
Plumbing leaks within or behind the wall

Our approach: symptom to source

We follow a simple, evidence-led sequence: symptom → investigation → likely cause → proportionate repair. The internal damp is the symptom; the repair belongs at the external defect that is letting water in.

Fixing the cause — repointing, resealing, clearing or repairing rainwater goods, addressing a roof or chimney defect — is almost always more effective and better value than treating the internal face alone.