★★★★★96.1% customer satisfaction · 1,250+ jobs since 2005 · up to 30-year guarantee
20+
Years protecting NE homes
1,250+
Damp jobs quoted since 2005
96.1%
Customer satisfaction
30yr
Guarantee on qualifying work
Wall Damp explained
What is wall damp?
Wall damp is a symptom, not a single problem — it can be caused by rising damp, penetrating damp, condensation, a plumbing leak or bridged cavities. Because the right repair depends entirely on the cause, the first step is always an accurate diagnosis. Our free survey uses moisture readings to confirm exactly why your wall is damp, then we treat it at source with the correct, guaranteed solution.
Know the signs
Signs of wall damp to look for
Spotting it early keeps the repair small. These are the tell-tale signs in North East homes:
Damp, cold or discoloured patches on internal walls
Peeling paint, bubbling plaster or stained wallpaper
White salt deposits or a tide mark near the floor
Black mould in corners or behind furniture
A persistent damp, musty smell in the room
Common causes
Why wall damp happens
Rising damp from a failed damp-proof course
Penetrating damp from external defects
Condensation and poor ventilation
Plumbing or roof leaks tracking through the wall
Bridged cavities or high external ground levels
Our proven process
How we treat wall damp
Diagnosis first, then a lasting, guaranteed fix — never a sticking plaster.
Diagnose the cause
We never assume. Moisture readings and a full inspection confirm whether it's rising, penetrating, condensation or a leak.
Treat at source
Depending on the diagnosis: a new DPC, external repairs, ventilation, or referral for a leak repair — the right fix, not a one-size-fits-all.
Renew the plaster
Contaminated plaster is replaced with a breathable, salt-resistant system so the wall can dry and stay sound.
Finish & guarantee
We leave the wall ready to decorate and back qualifying work with a written guarantee.
Get rid of wall damp for good
Book your free, no-obligation survey. We'll confirm the cause, give you a clear fixed price and back the work with up to a 30-year guarantee.
A 96.1% satisfaction rating isn't an accident — it's what happens when local specialists do the job properly, the first time.
★★★★★
“Dean was professional from start to finish and finished ahead of schedule — all backed by a 30-year guarantee. Couldn't recommend them more.”
ST
Sarah T.Newcastle upon Tyne · Verified customer
★★★★★
“Had tide marks creeping up the hallway for years. The survey explained exactly what was wrong and the price was fair. Bone dry now.”
MR
Mark R.Gateshead · Verified customer
★★★★★
“Black mould in the bedroom was making us ill. Honest advice, no scare tactics, sorted in two days. Brilliant local team.”
JP
Joanne P.Sunderland · Verified customer
Your questions, answered
Wall Damp FAQs
Why is my wall damp in just one spot?
A localised damp patch usually points to penetrating damp or a leak rather than rising damp, which spreads along the base of a wall. The exact location and pattern help us diagnose the cause — that's what the survey is for.
Should I just replaster the damp wall?
Replastering alone hides the problem and it will return. The damp has to be stopped at source first — then new plaster lasts. We always treat the cause before making good.
Can damp walls be saved or do they need rebuilding?
In the vast majority of cases the wall is perfectly sound and only needs the damp cause treated and the plaster renewed — full rebuilding is rare. We'll always recommend the least invasive lasting fix.
Is treatment guaranteed?
Yes, qualifying wall damp treatment comes with a written guarantee of up to 30 years.
This is a lead generation website. By submitting your details you are simply being passed to a reputable, independent tradesman.
Any work carried out is paid directly to them, not to North East Damp Proofing.
