Mould Removal & Prevention in Winchester, Hampshire
Mould in an older Winchester home is often a sign the building can no longer breathe the way it was designed to. Proofterior treat the mould, find what is trapping the moisture and put it right with solutions that suit the property — modern or historic.
- 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 Winchester
Our specialists regularly work throughout Winchester and the surrounding neighbourhoods.
Why mould appears in Winchester homes
The city’s mix of historic buildings, river valley and post-war estates each bring their own causes.
Period homes that cannot breathe
Flint, chalk and soft-brick walls in Hyde, St Cross and the city centre were built with lime. Vinyl paint, gypsum plaster and cement render trap moisture and feed mould.
Itchen valley humidity
Homes near the water meadows and the river sit in a damp, sheltered valley where moist air hangs around, especially in autumn and winter.
Post-war and student homes
Cold solid or early cavity walls in Stanmore and Weeke, and busy shared houses near the university, create plenty of condensation.
How we remove mould in Winchester
1. Understand the building
We look at how the walls were built and finished, measure humidity and moisture, and identify whether condensation or damp is the cause.
2. Treat it carefully
Anti-microbial treatment suited to the surface, with gentle methods and breathable products on historic finishes.
3. Fix the cause sympathetically
PIV or quiet extraction, breathable lime-based finishes, or repairs to gutters and pointing — chosen to suit the property.
Services we provide in Winchester
Every service is delivered by our own in-house team and backed by our 25-year guarantee.
Your local damp, mould & timber team in Winchester
In Winchester’s conservation areas and listed buildings, the wrong fix can make mould worse and cause problems with the local authority. We explain exactly what is causing the mould, recommend breathable, reversible solutions where the building needs them, and give you a detailed written report you can share if consent is required. We also cover the villages around the city, including Kings Worthy, Twyford, Littleton and Alresford.
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 Winchester
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 use gentle treatments and breathable materials on historic surfaces. If any fix needs listed building consent, such as new ventilation through a wall, our report gives you the detail to support the application.
Often because modern paints, plasters or renders have stopped the walls breathing, or ventilation has been sealed up. Treating the mould without addressing that will only ever be temporary.
In many cases, yes. A loft-mounted PIV unit is quiet, discreet and needs no holes through historic walls. We check your loft and layout first.
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 Winchester
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.