When damp patches appear along the base of internal walls, many Wallasey homeowners assume tanking is the best solution.
However, internal tanking isn’t always the right first step — especially if the external ground levels or drainage are too high.
At Weather Wise Solutions, we often inspect properties where tanking has been applied over the symptoms, not the cause. Before spending money on internal treatments, it’s vital to understand where the moisture is really coming from.
💧 When Tanking Works — and When It Doesn’t
Tanking creates a waterproof barrier on the inside of walls to stop water ingress. It’s ideal for below-ground rooms such as cellars or basements where external access isn’t possible.
But if the external ground level sits above the damp proof course (DPC) or the walls are retaining moisture from poor drainage, tanking will only hide the issue temporarily.
Typical signs of an external problem include:
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Damp visible along external brickwork
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Earth or paving levels sitting above the internal floor
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Moss or algae growth on lower walls
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Missing or blocked drainage channels
In these cases, lowering the ground level or improving surface drainage will relieve water pressure on the wall and often resolve the problem without tanking.
🧰 The Right Diagnostic Approach
At Weather Wise Solutions Limited, our process always begins with proper diagnosis — not guesswork.
We’ll check:
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Whether the DPC is bridged
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The height of external ground levels
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Any drainage defects or blocked gullies
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Wall moisture content and salt deposits
Once we identify the source, we’ll recommend the most effective solution — whether that’s external drainage works, render removal, or a carefully applied tanking system.
Our team uses trusted materials from PAM Ties, Wycamol, and other quality suppliers to ensure long-lasting results.
🏡 Wallasey’s Trusted Damp Company
As a family-run damp company and proud members of the Federation of Damp, Damp Proofing Association and Trust A Trader we’re committed to accurate diagnosis and reliable repairs.
Every treatment is carried out by CPD-qualified specialists, with insurance-backed guarantees available on approved works.
👉 Book your free damp assessment today:
https://weatherwiseuk.co.uk/pages/contact