Help With Cavity Wall Insulation Guarantee Claims
If your cavity wall insulation has caused damp, you may be covered by a guarantee. Proofterior are independent of the original installer: we survey the wall, record what is really in the cavity, and give you a clear written report to support your claim with the installer or CIGA — then carry out the remedial work once it is agreed. Serving Dorset, Hampshire and Wiltshire.
- 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
What is Help With Cavity Wall Insulation Guarantee Claims?
Most cavity wall insulation installed in the UK since the mid-1990s came with a 25-year guarantee, usually through CIGA (the Cavity Insulation Guarantee Agency). The guarantee is linked to the property, so it normally passes to new owners. If the insulation was installed or specified badly and has caused problems, the guarantee may cover remedial work such as extraction and repairs. The usual route is to contact the original installer first with your guarantee details. If the installer does not resolve it, or has stopped trading, you can raise it with CIGA. Throughout, evidence matters: when the problem started, what is in the cavity, whether it is wet or slumped, and whether something else — such as a leaking gutter — is to blame. Guarantees often exclude damage from poor maintenance, so an honest, independent report helps. One warning: do not remove guaranteed insulation privately while a claim is open, as this can affect the guarantee.
The warning signs to look for
Catching the problem early keeps repairs simpler and less costly. If you notice any of these signs, it is worth booking a specialist survey before the damage spreads.
Book a complimentary survey
- Damp or mould appeared after cavity insulation was installed
- You have, or think you have, a CIGA guarantee certificate
- The installer has not responded or has stopped trading
- Your claim was rejected and you want a second opinion
- You need independent evidence of what is in the cavity
- You bought a house and inherited the insulation guarantee
- You were cold-called about a “cavity wall insulation claim”
- You want remedial work done properly once a claim is agreed
Our treatment process
Every job follows the same careful, diagnosis-first method — so you know exactly what is happening and why at each stage.
Initial chat: we talk through the symptoms, when the insulation went in and any paperwork you have.
Independent survey: borescope inspection, moisture readings, thermal imaging and an external defect check.
Evidence report: photographs and readings showing the condition of the fill and the likely cause of the damp.
Your claim: you send the report to your installer and, if needed, CIGA. We can answer technical questions.
Remedial works: once agreed, our team carries out extraction, repairs, re-insulation and internal making good.
Sign-off: camera check, photographs and our 25-year insured guarantee on the work we carry out.
Help With Cavity Wall Insulation Guarantee Claims — from our recent projects
Real photos from Proofterior jobs across Dorset, Hampshire and Wiltshire — carried out by our own in-house team.
Included as standard
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.
Help With Cavity Wall Insulation Guarantee Claims across Bournemouth, Poole & the South Coast
Many homes across Bournemouth, Poole, Southampton and Portsmouth had cavity walls filled under past energy schemes, and a good number still have years left on their guarantees. We help homeowners across Dorset, Hampshire and Wiltshire get clear, independent evidence — so a valid claim is not dismissed and an invalid one does not waste months. Our team works across Bournemouth, Poole, Christchurch, Southampton, Portsmouth, Winchester, Salisbury and the towns and villages in between.
Covering Dorset, Hampshire & Wiltshire
Local knowledge, specialist expertise and lasting protection for the home you care about.
Everything you might be wondering
Look through the property paperwork for a CIGA or installer certificate, or ask your conveyancer. CIGA can also check whether a guarantee is registered for your address.
Your original installer, with your guarantee details. If they do not resolve it, or have stopped trading, you can contact CIGA to take the matter further.
No. Removing guaranteed insulation privately while a claim is open can affect the guarantee. Get independent evidence first and follow the claims process.
No. We are an independent damp and cavity wall specialist. We do not charge claim fees or take a share of any settlement — we provide survey evidence and carry out remedial work.
Be cautious. Some firms cold-call promising compensation for a fee or a percentage. You can contact your installer and CIGA yourself at no cost. Never pay an upfront fee to a company you did not contact.
Ask for the reasons in writing. If you think the decision is wrong, an independent survey can show whether the insulation, rather than a maintenance issue, is the cause. We will tell you honestly what we find.
Get clear, honest answers about your home
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.