Loft InsulationInstallers

Rafter insulation in Windsor

If you need rafter insulation in Windsor, we can help, and it starts with a free survey and a fixed written quote.

Jobs in SL4, SL3 and SL1 are all within our normal area, inside the Windsor and Maidenhead council area.

Guide price £1,645 to £2,595 Windsor, Berkshire
Insulation boards fitted between roof rafters

Where we work around Windsor

Windsor sits about 16 miles from Reading, measured in a straight line.

We work in neighbouring Slough, Maidenhead, Ascot and Bracknell too.

Postcode districtsSL4, SL3, SL1, SL2
Council areaWindsor and Maidenhead
County or areaBerkshire

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
  • Build-up designed for your type of roof underlay
  • Rigid insulation between the rafters, joints taped

Why book with us in Windsor

Photos of the finished loft

You see the work done without climbing the ladder.

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.

We measure before we quote

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

Tidy work

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

How much does rafter insulation cost in Windsor?

£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 Windsor

Is loft work in Windsor different from anywhere else?

The method is the same, but older terraces, cottages and newer estates each have their own quirks: lath ceilings, low pitches or trussed roofs. We plan for the loft we find.

How do I pay for work in Windsor?

Payment terms are set out on your quote. We never ask for payment on the doorstep or in cash.

Do you take on jobs outside Windsor?

Yes. We also work in Slough and Maidenhead and elsewhere in Berkshire.

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.

Is insulating between the rafters better than the loft floor?

Not for saving energy alone. Insulating the floor heats less space and costs far less. Rafter insulation is the right answer when the loft itself needs to be warm.

Rafter insulation in other towns

Other loft work in Windsor

Find out what your loft needs

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