Knowledge centre
Knowledge Centre
Straight answers on spray foam, roofing and loft insulation
Everything we get asked on site, written up in one place. What spray foam does to a roof, what lenders and surveyors want to see, what a re-roof involves, and what the work tends to cost.
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Browse by topic
Pick the subject you need
Each topic gathers the guides, answers and case studies that relate to it, so you can read around a decision before you ring anyone.
Spray foam
Spray foam removal explained
What spray foam does to a roof, how it is removed, and how to pick a contractor who will do it properly.
Mortgages
Spray foam, mortgages and selling
Why lenders and surveyors object to spray foam, what they ask for, and what happens after removal.
Roofing
Roofing and re-roofing
Repair or replace, which covering to choose, how long the work takes and what the rules are.
Lofts
Loft insulation and boarding
Insulation depth, materials, condensation, VAT and boarding over a loft you still want to use.
Costs
What the work costs
Our cost guides for roofs, chimneys, roofline and insulation, plus the price questions we get asked most.
Our work
Case studies
Real projects with photographs, from the survey through removal and roofing to how the loft was left.
Most read
The guides people open first
If you are not sure where to start, these are the ones homeowners read most.
Cost
How much does spray foam removal cost in the UK?
The question we are asked before any other, answered with what actually drives the price.
Mortgages
NatWest mortgage and spray foam insulation
What one major lender asks for when there is spray foam in the roof.
Roofing
Roof replacement cost UK: complete price guide
What a new roof costs by property type and covering.
DIY
Can I remove spray foam insulation myself?
Why homeowners ask, and what goes wrong when they try.
Foam types
Open-cell vs closed-cell spray foam
How to tell which one you have, and why it changes the job.
Repairs
Roof repair or replacement: how to decide
When a repair is the sensible answer and when it is money wasted.
Our services
The work itself
Reading is one thing. If you want the work quoted, these are the pages that cover it.
Spray foam
Spray foam removal
Closed-cell and open-cell removal by our own directly employed teams.
Roofing
Roof replacement
Full re-roofs with an insurance-backed guarantee on qualifying work.
Insulation
Loft insulation
Knauf Loft Roll mineral wool installed to the recommended depth.
Free no-obligation survey
Still not sure what
you are looking at?
Send us photographs of your loft, or book a survey and we will tell you what is there and what it needs. Call, email, or fill out the contact form.
