Room-in-roof insulation in Greater London

Where we work around Greater London

Council areas covered: City of London and Westminster.

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 room-in-roof insulation?

Most rooms-in-roof are reached by stripping the existing plasterboard on the slopes, fitting insulation between and over the rafters, and re-boarding. Dormer cheeks and roofs are included where they can be reached. More about room-in-roof insulation.

Eaves voids insulated where accessible
Boarding and finishing as agreed on the quote
Insulation to slopes, knee walls and flat ceiling

Why book with us in Greater London

Tidy work

Dust sheets on the route in and every bit of packaging taken away.

We measure before we quote

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

Fixed written price

The price on the quote is the price you pay. It only changes if you change the job, or if we find something hidden, such as rot, and you agree the change in writing first.

Clear contact details

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

How much does room-in-roof insulation cost in Greater London?

£3,995 to £8,995One room-in-roof, depending on size and finish. 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 room-in-roof 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.

Which council covers my address in Greater London?

Councils in Greater London include City of London and Westminster. Your council matters for building control questions and some funding schemes.

How long does room-in-roof insulation take?

Usually three to six working days for one room, depending on how much is stripped and how it is finished.

Can it be done without removing the plasterboard?

Sometimes the flat ceiling and eaves voids can be reached from behind. The slopes almost always need the boards off to insulate them properly.