Loft insulation in Windsor
Loft insulation and loft work in Windsor, Berkshire: insulation, top-ups, boarding, hatches, ladders, ventilation and surveys.
We cover the SL4, SL3 and SL1 postcode districts, inside the Windsor and Maidenhead council area.
Loft services in Windsor
Insulate the loft
- Loft insulation in Windsor From £495
- Loft insulation top-up in Windsor From £395
- Blown loft insulation in Windsor From £595
- Natural loft insulation in Windsor From £995
- Rafter insulation in Windsor From £1,645
- Room-in-roof insulation in Windsor From £3,995
Boarding, hatches and ladders
- Loft boarding in Windsor From £695
- Insulated loft hatches in Windsor From £245
- Loft ladder fitting in Windsor From £295
Remove and replace
Ventilation and frost protection
- Loft ventilation in Windsor From £245
- Loft condensation investigation in Windsor From £145
- Pipe and tank lagging in Windsor From £95
Surveys and funding checks
- Loft insulation survey in Windsor From £95
- Thermal imaging survey in Windsor From £165
- Loft insulation grants check in Windsor No charge
Homes and buildings
Where we work around Windsor
Windsor is about 16 miles from Reading as the crow flies.
We work in neighbouring Slough, Maidenhead, Ascot and Bracknell too.
| Postcode districts | SL4, SL3, SL1, SL2 |
|---|---|
| Council area | Windsor and Maidenhead |
| County or area | Berkshire |
Loft insulation in other towns
Building regulations in England
Insulating a loft is treated as renovating a thermal element when more than half of the ceiling area is insulated. Approved Document L sets a target U-value of 0.16 W/m²K, which is around 250 to 300 mm of mineral wool. Loft insulation on its own usually does not need a building notice, but it still has to meet that standard. Rafter insulation that forms part of a loft conversion is notifiable building work.
Funding in England
- ECO4, the energy supplier scheme, runs until 31 December 2026 for eligible households, with no supplier scheme to follow it.
- The Great British Insulation Scheme closed on 31 March 2026.
- The Warm Homes Plan, announced in January 2026, funds upgrades for low-income households, including through councils under Warm Homes: Local Grant.
- Check what is open for your address on GOV.UK before agreeing to any funded offer.
GOV.UK: find ways to save energy in your home
The Energy Saving Trust puts a typical professionally installed loft at about £750 from bare joists, or £600 to top up from 120 mm.
Questions about loft insulation in Windsor
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.
Can a landlord in Windsor book work for a tenanted house?
Yes. We can arrange access with the tenant directly and send you photos once the work is finished.
Do you take on jobs outside Windsor?
Yes. We also work in Slough and Maidenhead and elsewhere in Berkshire.
Will I get a written quote for work in Windsor?
Yes. Every quote is in writing with the work, the price and what is included, so you can compare it properly.
