SuperQuilt multifoil insulation
A/A+ fire ratedMultifoil earns its place in Forest Hill roofs where depth is the binding constraint — period timbers, low headroom, or a conversion already boarded out.
South East London loft specialists
Loft insulation in Forest Hill
Insulation is the one home improvement that starts paying you back on the next heating cycle rather than in a decade. We fit it across Forest Hill — to full depth, with the eaves kept clear and the hatch sealed, which is where most jobs quietly go wrong.
Free survey in Forest Hill
Fixed written price
No call-out charge
Why it matters
The case for insulating your Forest Hill loft
25%of a home's heat is lost through an uninsulated roof
1 in 5UK lofts are under-insulated or have the wrong material
270mmthe depth current building regulations recommend
90%less radiant heat loss with SuperQuilt multifoil
Put against current energy prices, a Forest Hill loft still carrying 100mm of settled wool is costing its owner money every single winter it stays that way.
Forest Hill's homes
Forest Hill: what a survey usually turns up
Housing across Forest Hill and the surrounding South East London area is largely Victorian and Edwardian terraces on the older high ground, extensive interwar semi-detached suburbs, and post-war estates, built through the 1880s through the 1930s. When we open a hatch here, the most common finding is not an absence of insulation but an insufficiency of it — a layer that was correct when fitted and has since been overtaken by both the guidance and the price of energy.
The second most common finding is a ventilation problem. Insulating a loft floor makes the roof space colder, and a colder roof space condenses more readily. Where a previous installer packed material tight into the eaves, the roof has lost the airflow it depends on and the homeowner has a damp loft they blame on the insulation rather than on the installation.
Add to that the local factor — hipped roofs on 1930s semis cut the usable loft area down sharply at the corners, which changes how much of it is worth boarding — and you have most of what a Forest Hill survey is checking for.
Our services in Forest Hill
Five ways we keep Forest Hill homes warm
Every one of these begins with the same free survey and ends with a fixed price agreed before anything starts.
Loft insulation installation
270mm depthMineral wool cross-laid to the 270mm depth current regulations recommend. For most Forest Hill homes this is the single highest-value thing you can do to the building.
Loft boarding
Storage-readyStorage that does not flatten your insulation. We raise the deck on battens so the full depth survives underneath — the version most Forest Hill lofts should have had first time.
Loft ladders
Fitted in a dayFitted in a day, finished to match your landing, with the hatch insulated and draught-sealed as part of the same job.
Loft makeovers
All-in-oneFor Forest Hill homeowners who want the roof space to stop being a problem and start being storage: everything, in a day.
Not sure what your Forest Hill loft needs?
Describe the property and what is bothering you about it, and we will recommend the right combination — or tell you that nothing needs doing.
Where we work
Covering Forest Hill and the surrounding area
Catford and Brockley are all covered by the team that works Forest Hill, which is why we can usually offer a survey slot within the same week rather than the same month.
In the loft
Loft work in and around Forest Hill
Examples of the work we carry out across the area — insulation, boarding, access and full makeovers.
Questions & answers
Forest Hill loft insulation — common questions
How much does loft insulation cost in Forest Hill?
There is no single figure, and anyone offering one for Forest Hill without seeing the loft is guessing. The largest swing factor is almost always whether the existing material can be topped over or has to be stripped out and disposed of. We survey free of charge and quote a fixed price afterwards.
Will this improve my EPC rating?
Very likely. Without documentation an assessor will often default to a pessimistic assumption about what is in the loft, so we make sure you have the paperwork to show them.
What insulation depth do you fit?
Full recommended depth of 270mm as standard. Going deeper gives sharply diminishing returns; stopping short leaves money on the table every winter. For sloping ceilings in Forest Hill loft rooms, multifoil at around 40mm is the practical alternative.
What homeowners say
Reviews from Forest Hill customers
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Worth reading before you book
How much does loft insulation cost in London? — one of our guides, written by the surveyors who assess lofts across Forest Hill and the rest of the capital every week. You can also browse all of our advice guides or read the general FAQ.
Written and fact-checked by the Loft Insulation London survey team, who assess loft spaces across the capital every working week. Last reviewed .
Ready for a warmer Forest Hill home?
Get a fixed written price for your Forest Hill property. No call-out fee, no obligation, and no chasing afterwards.