Rafter insulation in Greater London

Where we work around Greater London

This takes in the City of London and Westminster council areas.

That covers the BR, CR, DA, E, EC, EN, HA, IG, KT, N, NW, RM, SE, SM, SW, TN, TW, UB, W and WC postcode areas.

Councils	City of London and Westminster
Postcode areas	BR, CR, DA, E, EC, EN, HA, IG, KT, N, NW, RM, SE, SM, SW, TN, TW, UB, W, WC
Towns listed	63

What is rafter insulation?

Because the whole roof slope, the gables and the party walls now have to be insulated, this costs much more than insulating the floor and saves less heat for the money. It earns its place when you need a warm loft. More about rafter insulation.

Insulated plasterboard lining where specified
Rigid insulation between the rafters, joints taped
Build-up designed for your type of roof underlay

Why book with us in Greater London

Photos of the finished loft

You see the work done without climbing the ladder.

Plain-English advice

We explain what we find in plain English, and say so when nothing needs doing.

Clear contact details

Your quote says who to call with questions before, during and after the work.

We measure before we quote

Existing depth, joist spacing, wiring and the tank are checked, not guessed.

How much does rafter insulation cost in Greater London?

£1,645 to £2,595About 30 m² of roof slope. Free survey and a fixed written quote before any work.

Part of this work can be zero-rated as energy-saving materials until 31 March 2027, and part is standard-rated. If VAT applies, your quote shows which is which.

Work out a guide price for your loft

Building regulations in England

In England, a loft insulated across more than half its area should reach a U-value of 0.16 W/m²K. Insulation alone is not usually notified to building control. How the rules work across the UK.

Questions about rafter insulation in Greater London

How do I book a survey in Greater London?

Send the form or call us. We call back to agree a time and confirm it in writing.

Do you cover the whole of Greater London?

Yes. We cover every town and village in Greater London, including Islington, Barking and Sutton.

Can I use the loft as a bedroom after rafter insulation?

Insulation alone does not make a loft habitable. Fire escape, stairs, floor strength and headroom all come into a conversion, which needs building control.

Will it cause condensation?

It can if the build-up is wrong for the roof. Old bitumen felt needs a ventilation gap behind the insulation; a modern breathable membrane may not. We check before we design it.