External Wall & Brick Damp Services in Brighton
Your external walls are your home’s raincoat — and Sussex coastal weather tests every seam. From repointing and render repairs to breathable water-repellent treatments, we keep the rain on the outside where it belongs.
- 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.
How do you stop damp coming through external walls? Damp through external walls is stopped by repairing the defects letting water in — failed pointing, cracked render, damaged sills and copings — and then protecting porous masonry with a breathable water-repellent cream. This silicone-based treatment makes brickwork shed rain while still allowing the wall to breathe, typically protecting for 20+ years.
Signs of external wall damp in your home
Caught early, external 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 after rain — internal damp appearing on external-facing walls in wet weather
- Crumbling mortar joints — pointing that's cracked, recessed or falling out
- Cracked or hollow render — blown render trapping water against the wall
- Green staining & moss — algae marking where walls stay persistently wet
- Spalling bricks — brick faces flaking off from freeze-thaw damage
- Damp around openings — water tracking in at window reveals, sills and lintels
What causes external wall damp?
Driving rain off the Channel hits Brighton's exposed elevations hard. Once pointing perishes or render cracks, every storm pushes water deeper into the wall. Solid-wall Victorian properties — most of central Brighton and Hove — have no cavity to stop it, so moisture travels straight through to internal plaster.
Freeze-thaw cycles then make it worse: trapped water expands as it freezes, spalling brick faces and widening cracks. A modest programme of repointing, render repair and breathable weatherproofing stops the cycle and protects the wall for decades.
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 external wall damp
External condition survey
We inspect pointing, render, brickwork, sills and rainwater goods to map exactly where water is getting in.
Repair the envelope
Defective pointing is raked out and repointed with appropriate mortar; cracked render is repaired or renewed; sills and copings made good.
Breathable protection
Exposed elevations are treated with masonry water-repellent cream — invisible, breathable and effective for 20+ years.
Guaranteed weathertight
Works are completed by vetted local specialists and backed by our written guarantee.
Every job protected for 30 years.
All external 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.”
External Wall Damp FAQs
What is the best way to waterproof external brick walls?
Does repointing stop damp?
Should I use lime or cement mortar for repointing?
Is masonry cream visible after application?
How much do external wall damp services cost?
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.
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