Insulation
Loft insulation
Loft insulation to warm the home, cut heat loss and reduce the cold surfaces that drive condensation and mould.
Why diagnosis matters
Treat the cause, then repair the damage
Heat lost through the roof leaves ceilings and upper rooms colder, which encourages condensation and mould. We top up or renew loft insulation to recognised depths, keeping ventilation paths clear so the roof space stays healthy.
Complimentary survey
Book Your Complimentary Survey
Over 35 years of independent expertise. Written findings included. No sales pressure. No obligation.
Book your complimentary surveyTechnical review
Dan, Director / Surveyor
Last reviewed: July 2026. Advice is general until the property, access and visible evidence have been assessed.
Guarantee & aftercare
Written guarantee terms are matched to qualifying work, with inclusions, exclusions and aftercare explained before acceptance.
What we consider
Possible causes and lookalikes
Missing or thin insulation at ceiling level
Heat loss creating cold ceiling surfaces
Blocked eaves ventilation
Gaps and compression reducing performance
Inspection method
A clear work sequence
Step 1
Inspect the loft, existing insulation and ventilation
Step 2
Agree the depth and materials to be installed
Step 3
Lay or top up insulation, keeping eaves ventilation clear
Step 4
Advise on any related condensation or ventilation issues
Scope boundaries
Honest about what the work does—and does not—cover
We supply and install loft insulation and maintain ventilation paths in-house. Structural roof works, and any electrical alterations required in the loft, are referred to the appropriate trade.
Complimentary specialist survey
Your Complimentary Specialist Survey
Backed by over 35 years of independent damp and timber expertise.
We believe in diagnosis before treatment. That's why we offer every homeowner and property manager in Dorset, Hampshire and Wiltshire a complimentary specialist survey — carried out by an experienced specialist, not a salesperson.
Over 400 combined reviews across Google and Checkatrade. Over 35 years protecting Dorset homes.
Common questions
About loft insulation
How much loft insulation do I need?+
Current guidance recommends a substantial depth of insulation at ceiling level. We confirm the existing depth and top up to a suitable standard for your loft.
Can loft insulation cause condensation in the roof?+
If eaves ventilation is blocked, moisture can build up in the roof space. We keep ventilation paths clear so insulation does not create a new condensation problem.
Should I insulate if I have mould upstairs?+
Warmer ceilings help, but we assess ventilation and any leaks too. Insulation is part of the solution, not a guaranteed cure on its own.
Is the specialist survey really free?+
Yes — completely. We offer every homeowner and property manager across Dorset, Hampshire and Wiltshire a complimentary specialist survey at no charge. This includes an on-site inspection, written findings, a clear scope of any recommended work, and an honest referral if the problem falls outside what we do. You pay nothing for the survey. You only pay if you commission the remedial work, and you are under no obligation to do so. The reason we do this is straightforward: we believe in diagnosing the problem before recommending a treatment. A proper inspection takes time, and we'd rather invest that time up front than quote a solution before we've understood the cause.
Not sure if this is your problem?
That's exactly what the survey is for. Book your complimentary specialist survey and one of our experienced team will identify the cause on-site, consider the alternatives, and give you written findings — at no charge and with no obligation.
Related services
Continue your investigation
Recent work
Photographed on our own projects
A selection of real jobs from this service, photographed on site across Dorset, Hampshire and Wiltshire.
Reviewed by local homeowners
Trusted across Dorset, Hampshire and Wiltshire
Independent feedback from customers on Google and Checkatrade — alongside over 35 years of damp proofing and plastering experience.
Next step
Claim your complimentary survey before choosing a treatment
Tell us what you can see, when it changes and where the property is. Photographs can help us triage the next step.