If damp keeps returning even after treatment, your home in Llandudno may be suffering from bridging — where moisture bypasses the damp proof course (DPC) and travels up the wall.
Bridging is one of the most common reasons for failed damp proofing, especially in older North Wales properties where ground levels or plaster finishes have been altered over time.
At Weather Wise Solutions, we help homeowners identify and correct bridging before it causes further damage to plaster, skirting boards, and timber floors.
💧 What Is Bridging?
Your home’s DPC is designed to stop ground moisture from rising through the wall.
Bridging occurs when something allows moisture to move around or over that barrier.
Once it happens, water travels up through the masonry, creating damp patches and salt deposits on interior walls.
Common causes include:
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High external ground levels – soil, paving, or driveways raised above the DPC
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Render or plaster bridging – internal plaster taken down to the floor or external render covering the DPC line
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Cavity wall debris – mortar droppings or insulation touching both skins of the wall
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Blocked or missing sub-floor ventilation – allowing moisture to collect under timber floors
All these issues let damp rise where it shouldn’t.
🔍 How to Spot Signs of Bridging
Homeowners in Llandudno can look out for these tell-tale signs:
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Damp patches appearing above skirting height
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Tide marks that don’t dry out after treatment
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Crumbling plaster or salts forming on lower walls
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External render or soil line sitting level with interior damp patches
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A musty smell or soft skirting boards
If you’ve had a DPC installed but damp persists, bridging is the most likely culprit.
🧰 How to Fix Bridging
At Weather Wise Solutions Limited, we start with a full moisture and salt assessment to confirm the cause before any repair work.
Typical remedial actions include:
✅ Lowering external ground levels to re-establish the DPC line
✅ Removing bridging plaster internally and reapplying a salt-resistant system
✅ Cleaning out cavity walls to remove debris or failed insulation
✅ Improving ventilation with new air bricks or PIV/DMEV systems to keep moisture balanced
We use durable, breathable systems from PAM Ties and Wycamol for long-lasting protection.
🏡 Why Llandudno Homeowners Choose Weather Wise
As a family-run damp and ventilation company, we’re trusted across North Wales for transparent advice and proven results.
We’re accredited members of the Federation of Damp the Damp Proofing Association and Trust A Trader
Our CPD-qualified specialists provide insurance-backed guarantees on approved works and ensure every diagnosis is based on real moisture data — not guesswork.
👉 Book your free bridging and damp assessment in Llandudno:
https://weatherwiseuk.co.uk/pages/contact