Damp Wall Solutions in Brighton & Sussex
Damp walls are the most common symptom we're called about — and the cause is different in almost every home. We diagnose what's really wetting your walls, then fix it with the right treatment first time.
- Free, no-obligation quotes
- Local Sussex surveyors
- 30-year guarantee
- Works can start in days
Get My Free Damp Quote
Tell us about the problem — we’ll come back within 24 hours with a quote & survey time.
Why are my walls damp? Damp walls have three main causes: rising damp from the ground (tide marks below 1m), penetrating damp from outside (patches that worsen in rain), or condensation (mould on cold surfaces). Each needs a different fix, which is why professional diagnosis with moisture readings matters before any treatment.
Signs of wall damp in your home
Caught early, wall damp is far cheaper to fix. If you recognise any of these, it’s worth getting a local expert to take a look — our advice is free.
- Damp patches — discoloured, dark or wet-looking areas on internal walls
- Peeling or bubbling finishes — paint and wallpaper losing adhesion
- Salt deposits — white fluffy crystals appearing as walls dry
- Black mould growth — spotting on cold wall surfaces and corners
- Cold, clammy walls — walls that feel chilly and damp to the touch
- Musty odours — persistent damp smells in affected rooms
What causes wall damp?
A damp wall is a symptom, not a diagnosis. Ground moisture rising through a failed DPC, rain penetrating defective render or pointing, leaking plumbing buried in the wall, bridged cavities, and simple condensation all produce 'damp walls' — but each demands a completely different treatment.
That's why we always survey before we quote. Treating a condensation problem with a chemical DPC wastes your money; replastering over penetrating damp just hides it for a season. Get the diagnosis right and the fix is straightforward.
Not sure this matches what you’re seeing? Book a local damp survey and we’ll diagnose it properly — survey fees are discounted from any work you go ahead with.
How we treat wall damp
Proper diagnosis
Moisture profiling and inspection identify which type of damp is affecting your walls — rising, penetrating, condensation or a leak.
Targeted treatment
We apply the right fix: DPC injection, external repairs, ventilation improvements or tanking — never a one-size-fits-all upsell.
Repair & replaster
Damaged plaster is renewed with appropriate salt-resistant or breathable systems, ready for decoration.
Guaranteed dry
Completed works carry our 30-year guarantee, with honest aftercare advice.
Every job protected for 30 years.
All wall damp works are completed by checked & vetted local specialists and come with a 30-year guarantee — so you can fix it once and forget about it.
“Brett from The Damp Specialists gave us a great price and offered a 30-year guarantee on his work. The wall is bone dry a year on.”
“Survey was booked within a day of my call. Honest advice — they even told us one wall just needed ventilation, not treatment. Rare to find.”
“Rising damp in our Victorian terrace sorted in under a week. Tidy, polite and the price matched the quote exactly.”
Wall Damp FAQs
How can I tell what kind of damp my wall has?
Should I just replaster a damp wall?
Can damp walls make my house cold?
Do you handle internal and external wall damp?
Is the survey really free?
Stop damp before it spreads — and costs you more.
Quotes are free, surveys are local, and every job is protected by a 30-year guarantee. Tell us what you're seeing and we'll take it from there.
Other damp problems we fix
Rising Damp
Expert rising damp diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn moreCondensation & Mould
Expert condensation & mould diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn morePenetrating Damp
Expert penetrating damp diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn moreCeiling Damp
Expert ceiling damp diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn moreBasement Damp
Expert basement damp diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn moreTimber Damp
Expert timber damp diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn moreFloor Damp
Expert floor damp diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn moreWet Rot
Expert wet rot diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn moreDry Rot
Expert dry rot diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn moreExternal Wall Damp
Expert external wall damp diagnosis & treatment across Sussex, backed by our 30-year guarantee.
Learn more