Energy Efficiency Upgrades for Your Home
A warmer, drier home costs less to run and resists damp and mould. Proofterior improves the thermal performance of your property with specialist insulation and upgrades — reducing heat loss, lowering bills and improving your EPC rating. Every installation is backed by our 25-year insured guarantee.
- PCA aligned & ISSE accredited
- 25-year insured guarantee
- In-house specialist team
Book your complimentary survey
Answer a few quick questions and we'll arrange a specialist visit — no obligation, no charge.
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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
Warmer walls mean a drier, healthier home
Cold, poorly insulated walls and roofs do more than waste money. They create the cold surfaces where warm, moist air condenses — which is exactly where black mould takes hold.
Improving insulation raises internal surface temperatures, cuts heat loss and reduces condensation at the same time. Done well, it makes a home noticeably warmer, cheaper to heat and less prone to damp.
We assess your property’s current performance and recommend the upgrades that will make the biggest difference — from thin internal wall insulation to loft insulation — installed by our own in-house team with minimal disruption.
The energy upgrades we provide
Each targets a different source of heat loss. Our survey confirms which will give you the best return before any work is quoted.
IsoTherm internal wall insulation
A thin, high-performance internal system that warms cold solid walls, cuts heat loss and reduces the condensation and mould that cold surfaces cause.
Loft insulation
A quarter of a home’s heat can escape through an under-insulated roof. Correctly specified loft insulation is one of the most cost-effective upgrades available.
EPC rating improvement
Practical, targeted upgrades that improve your Energy Performance Certificate rating — valuable when letting or selling a property.
Condensation reduction
By warming cold surfaces and improving the building’s thermal balance, insulation directly reduces the condensation that feeds damp and mould.
Real projects across the South
Every job below is a genuine Proofterior project across Dorset, Hampshire and Wiltshire — assessed properly, installed to standard and finished with care. Click any project to see the before, after and exactly how we put it right.
Signs your home is losing heat
If you recognise any of these, an energy assessment could save you money and prevent damp.
Book a complimentary survey- Rooms that are cold and slow to heat up
- High and rising heating bills
- Cold walls that feel damp to the touch
- Condensation on windows and cold walls
- Black mould forming on cold external walls
- Draughts and noticeable cold spots
- A poor EPC rating on your property
- Uneven temperatures between rooms
Our services
Our work across Dorset, Hampshire & Wiltshire
Real photos from recent Proofterior projects — every job surveyed, treated and finished by our own in-house team.
From first call to lasting protection
Complimentary survey
We survey your property to assess current insulation levels and energy performance.
Expert diagnosis
Our team recommends the most effective upgrades for your specific property.
Specialist treatment
We install the insulation or upgrades with minimal disruption to your home.
25-year guarantee
All installation work is backed by our 25-year insured guarantee.
How we put it right
Once your survey identifies where heat is being lost, we install the upgrades that deliver the greatest improvement.
IsoTherm wall system
A slim internal insulation system that warms solid walls without losing significant room space, cutting both heat loss and condensation.
Loft & roof insulation
Correctly specified insulation laid to current standards, dramatically reducing the heat escaping through your roof.
Targeted EPC upgrades
A practical package of improvements chosen specifically to lift your EPC rating and make the home cheaper to run.
Damp-aware installation
Every upgrade is installed with ventilation and moisture in mind, so improving efficiency never traps damp inside the building.
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.
Covering Dorset, Hampshire & Wiltshire
Local knowledge, specialist expertise and lasting protection for the home you care about.
Everything you might be wondering
Yes. Most household mould forms where warm, moist air meets cold surfaces. By warming those surfaces, the right insulation reduces condensation and the mould it feeds — as long as ventilation is considered too, which we always do.
The IsoTherm system is deliberately thin, so it improves warmth with only a small reduction in room size — far less than traditional internal insulation.
Targeted insulation upgrades are among the most effective ways to improve an EPC rating. We will advise which measures will make the biggest difference to your specific property.
Most installations are completed quickly and cleanly. We protect your home throughout and clear up fully on completion.
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.