Damp, Mould & Timber Specialists in Portsmouth, Hampshire
Proofterior are damp, mould and timber specialists working across Portsmouth and Southsea. The city’s densely packed Victorian terraces, converted flats and island location create real damp challenges — we diagnose them accurately and put them right with our own in-house team.
- PCA aligned & ISSE accredited
- 25-year insured guarantee
- In-house specialist team
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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 Portsmouth
Our specialists regularly work throughout Portsmouth and the surrounding neighbourhoods.
Why Portsmouth properties suffer from damp
Portsea Island is low-lying and densely built, with thousands of Victorian and Edwardian terraces. These are the problems we tackle most.
Terraces with failed DPCs
Many Fratton, Southsea and North End terraces have original slate or bitumen DPCs that have failed or been bridged by raised pavements, causing rising damp.
Converted-flat condensation
Subdivided houses often have small rooms, limited extraction and drying laundry indoors — a recipe for condensation and black mould, especially in winter.
Coastal & high water table
An island city close to sea level means wet ground and salt-laden air. Cellars and lower ground floors frequently need below-ground waterproofing.
Services we provide in Portsmouth
Every service is delivered by our own in-house team and backed by our 25-year guarantee.
Your local damp, mould & timber team in Portsmouth
Looking for damp proofing in Portsmouth, mould removal in Southsea or a damp survey in Cosham? Proofterior help homeowners and landlords across the city. With Awaab’s Law now applying to social housing and setting the direction for private renting, we also provide clear written reports that landlords can rely on to evidence damp and mould investigations and repairs.
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
Our trained team handles every project from survey to completion. No subcontractors, 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 Portsmouth
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
Yes. We work right across Portsmouth, including Southsea, Fratton, North End, Copnor, Cosham, Drayton and Eastney.
Yes. We carry out damp and mould investigations, provide written reports with photos and moisture readings, and complete the remedial work — helping landlords respond quickly and keep clear records.
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 Portsmouth
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.