When damp patches appear on walls, especially near floor level, many homeowners immediately assume they need a new damp proof course (DPC). But in reality, the problem is often bridging plaster — a more common and easier-to-fix issue, especially in older Chorley properties.
At Weather Wise Solutions Limited, we help homeowners avoid unnecessary DPC installations by correctly diagnosing the cause of the damp. We’re proud members of the Federation of Damp and use proven products from PAM Ties to deliver long-lasting results.
🧱 What Is Bridging Plaster?
Bridging occurs when wall plaster, render, or internal finishes extend below the damp proof course, allowing moisture from the ground to rise above the DPC level. This creates the appearance of rising damp, even though the DPC is still working properly.
In many cases, there is no salt contamination present — just moisture wicking up past the DPC due to contact with wet masonry or floor finishes.
⚠️ When Do You Actually Need a New DPC?
A genuine DPC failure is rare but possible. You may need a new DPC if:
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There's no existing DPC present in the wall
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The original DPC has failed or been compromised
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There are visible hygroscopic salts, such as white deposits or crumbling plaster
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A moisture survey confirms vertical tracking beyond the DPC line
We always recommend a full inspection to determine the cause of the issue before prescribing treatments.
✅ The Benefits of Correct Diagnosis
If bridging is the only problem, all that’s needed is:
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Careful removal of contaminated or bridging plaster
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Application of breathable, salt-resistant plaster (like PAM Ties’ systems)
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Optional ventilation improvements if condensation is also present
When bridging is confirmed and the DPC is still intact, we can upgrade the system and provide an insurance-backed guarantee at no extra charge — giving you reassurance and long-term protection.
🛠️ Trusted Damp Proofing in Chorley
At Weather Wise Solutions Limited, we never recommend unnecessary work. We offer honest, evidence-based advice, using moisture mapping and diagnostic tools to get to the root of the problem.
We’re members of the Damp Proofing Association and work to strict industry standards.
📞 Book Your Free Damp Assessment Today and let our Chorley damp specialists help you make the right choice for your home.