Loft InsulationInstallers

Rafter insulation in Eltham

We fit rafter insulation for homes in Eltham and across Greater London, starting with a free survey and a fixed written quote.

That includes addresses in SE9, SE12 and SE3, inside the Greenwich council area.

Guide price £1,645 to £2,595 Eltham, Greater London
Insulation boards fitted between roof rafters

Where we work around Eltham

As the crow flies, Eltham is roughly 9 miles from central London.

Nearby, we also cover Welling, Sidcup, Woolwich and Catford.

Postcode districtsSE9, SE12, SE3, DA15
Council areaGreenwich
County or areaGreater London

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.

  • Rigid insulation between the rafters, joints taped
  • Build-up designed for your type of roof underlay
  • Vapour control layer where the design needs one

Why book with us in Eltham

Plain-English advice

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

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.

Photos of the finished loft

You see the work done without climbing the ladder.

Tidy work

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

How much does rafter insulation cost in Eltham?

£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 Eltham

Can you visit Eltham outside working hours?

Ask about early, late or weekend appointments when you get in touch, and we will tell you honestly what we can offer.

Do you charge extra to travel to Eltham?

Not normally. Our guide prices include normal travel to Eltham. If an address needs a ferry or an unusually long journey, we tell you the cost before you book.

How soon can you visit a home in Eltham?

We call you back to agree a time that suits you, and confirm the date in writing. Availability changes week to week, so we will give you the earliest slot we have.

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.

Rafter insulation in other towns

Other loft work in Eltham

Find out what your loft needs

Free survey and a fixed written quote for installation work. Guide prices first if you prefer.