Cavity Wall Insulation Removal in Southampton
If damp or mould has crept onto your outside walls since the cavity was insulated, the insulation itself may be the problem. Proofterior inspect the cavity on camera, extract failed insulation from Southampton homes and repair the defect that let water in.
- ISSE accredited
- 25-year insured guarantee
- In-house specialist team
Book your complimentary survey
Tell us what is happening and a specialist will find the real cause and give you a fixed price to fix it. No obligation.
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Genuine reviews from local homeowners
Over 200 verified reviews across Checkatrade, Google and Yell
“Excellent service from start to finish. The survey was thorough and professional, with honest, evidence-based advice rather than trying to sell unnecessary work. I came away with complete peace of mind.”
Alex Richards-Taylor
Google review
“Excellent service throughout. Ashton came out to look at an issue raised on a part-exchange survey and, rather than recommend expensive remediation, told me honestly there was nothing wrong with the wall. Great to have an honest discussion.”
Ian M.
BH16 · Damp Investigation
“Dylan and the Proofterior team were amazing. The report was incredibly comprehensive. Can’t recommend them enough.”
Sam Short
Google review
“Very pleased with the work on our living room and bedroom walls. Punctual, polite and friendly, and completed on time even though it was Easter week. Many thanks to everyone at Proofterior.”
Chris G.
BH20 · Penetrating Damp Treatment
“Dan was very thorough, professional and polite. Quick to respond and I would highly recommend.”
Malik R.
Yell · Quick & Professional
“The workmen were clean, pleasant and efficient and took just one day. The very next day we noticed a big difference with the damp issue. Many thanks.”
Nick Bennett
Google review
“Able to fit my job in for the next day and completed in a day as agreed. Not the lowest quote, but it comes with a 25-year guarantee, which I wanted — long-term peace of mind was vital.”
Alan M.
BH23 · Flat Roof Reseal
“Ashton was so friendly and informative. I’ve gone from worried to empowered — someone you can trust to do the right thing.”
Suzanna Furbank
Google review
“Really amazing service. Dan provided a really thorough damp investigation and a very helpful damp report. Very quick responses too.”
Paul A.
Yell · Damp Investigation
“Happy with the speed — a full flat survey within a week. They explained our options, the price was extremely competitive, and our tenants are pleased with their fresher, safer flat.”
Verified Customer
SP6 · Damp Proofer
“Dan provided a very professional service from start to finish. Very good communication and a first-class job.”
Mark H.
Yell · Professional Service
“Excellent service from start to finish. The survey was thorough and professional, with honest, evidence-based advice rather than trying to sell unnecessary work. I came away with complete peace of mind.”
Alex Richards-Taylor
Google review
“Excellent service throughout. Ashton came out to look at an issue raised on a part-exchange survey and, rather than recommend expensive remediation, told me honestly there was nothing wrong with the wall. Great to have an honest discussion.”
Ian M.
BH16 · Damp Investigation
“Dylan and the Proofterior team were amazing. The report was incredibly comprehensive. Can’t recommend them enough.”
Sam Short
Google review
“Very pleased with the work on our living room and bedroom walls. Punctual, polite and friendly, and completed on time even though it was Easter week. Many thanks to everyone at Proofterior.”
Chris G.
BH20 · Penetrating Damp Treatment
“Dan was very thorough, professional and polite. Quick to respond and I would highly recommend.”
Malik R.
Yell · Quick & Professional
“The workmen were clean, pleasant and efficient and took just one day. The very next day we noticed a big difference with the damp issue. Many thanks.”
Nick Bennett
Google review
“Able to fit my job in for the next day and completed in a day as agreed. Not the lowest quote, but it comes with a 25-year guarantee, which I wanted — long-term peace of mind was vital.”
Alan M.
BH23 · Flat Roof Reseal
“Ashton was so friendly and informative. I’ve gone from worried to empowered — someone you can trust to do the right thing.”
Suzanna Furbank
Google review
“Really amazing service. Dan provided a really thorough damp investigation and a very helpful damp report. Very quick responses too.”
Paul A.
Yell · Damp Investigation
“Happy with the speed — a full flat survey within a week. They explained our options, the price was extremely competitive, and our tenants are pleased with their fresher, safer flat.”
Verified Customer
SP6 · Damp Proofer
“Dan provided a very professional service from start to finish. Very good communication and a first-class job.”
Mark H.
Yell · Professional Service
Areas we cover near Southampton
Our specialists regularly work throughout Southampton and the surrounding neighbourhoods.
What we find in Southampton cavity walls
Southampton’s large post-war and 1960s housing stock was heavily insulated through energy schemes, and the estuary weather tests every weakness.
Exposed estuary elevations
Homes in Weston, Woolston and Sholing facing Southampton Water take driving rain that soaks through to wet insulation, especially on south-west walls.
Council and system-built estates
Estates in Millbrook, Thornhill and Lordshill were often insulated in bulk. Some walls had narrow or blocked cavities that should never have been filled.
Failed pointing and render
Cracked render and eroded mortar let water into the outer leaf. Insulation that would be fine in a sound wall then becomes a wet sponge.
How we remove cavity wall insulation in Southampton
1. Borescope survey
We drill a small inspection hole, look inside the cavity with a camera and take moisture readings to prove whether the insulation is wet, slumped or bridging the cavity.
2. Extract and clear
The old fill is broken up and vacuumed out into sealed bags, then the cavity is checked again on camera — including the bottom, where rubble and debris collect.
3. Fix the cause and make good
We repair the pointing, render or gutters that let water in, fill the drill holes with matched mortar and, only where the wall is suitable, re-insulate with bonded beads.
Services we provide in Southampton
Every service is delivered by our own in-house team and backed by our 25-year guarantee.
Your local damp, mould & timber team in Southampton
We have carried out damp and renovation work across Southampton — including a nitrate contamination job written up as a case study on our blog — and understand the city’s mix of Victorian terraces, post-war semis and 1960s estates. Every cavity wall survey includes camera images, moisture readings and a clear verdict on whether extraction is really needed, so you never pay for work the evidence does not support.
Built to impress, built to last
Diagnosis first
We identify the real cause before recommending any treatment. No guesswork, and never unnecessary work.
In-house specialist team
Vetted, Proofterior-trained specialists, managed by us from survey to completion. No compromises.
25-year guarantee
Every treatment is backed by our 25-year insured guarantee, giving you lasting protection and peace of mind.
Recent projects near Southampton
Real photos from Proofterior jobs in and around the area — surveyed, treated and finished by our own in-house team.
Covering Dorset, Hampshire & Wiltshire
Local knowledge, specialist expertise and lasting protection for the home you care about.
Everything you might be wondering
Very little mess reaches inside the home. Work is done from outside through small holes in the mortar joints, and the insulation is drawn straight into sealed bags.
Many homes have a guarantee from the original installation. We do not handle claims ourselves, but our survey report gives you independent evidence of the condition of the insulation and the cause of the damp to support a claim.
Yes. We cover all of Southampton plus Eastleigh, Chandler’s Ford, Totton, Hedge End and the Waterside.
Yes, once the insulation is out and the external defect is repaired the wall dries naturally. In bad cases we may also replace salt-damaged internal plaster.
No. Your initial property survey is completely complimentary and carried out with no obligation. A specialist visits your property, carries out a thorough assessment, and gives you clear, honest recommendations in plain English.
As a local, in-house team we are usually able to arrange a survey visit within a few days. Call us on 01202 287503 and we will book a time that suits you.
Get clear, honest answers about your home in Southampton
A qualified specialist will visit your property, carry out a thorough inspection and give you clear recommendations in plain English — everything explained in one visit, with no obligation.