Loft insulation in Portsmouth
We cover Portsmouth and the surrounding area for every kind of loft insulation job.
Postcode districts we cover here include PO1, PO5 and PO2, in the Portsmouth council area.
Loft services in Portsmouth
Insulate the loft
- Loft insulation in Portsmouth From £495
- Loft insulation top-up in Portsmouth From £395
- Blown loft insulation in Portsmouth From £595
- Natural loft insulation in Portsmouth From £995
- Rafter insulation in Portsmouth From £1,645
- Room-in-roof insulation in Portsmouth From £3,995
Boarding, hatches and ladders
- Loft boarding in Portsmouth From £695
- Insulated loft hatches in Portsmouth From £245
- Loft ladder fitting in Portsmouth From £295
Remove and replace
Ventilation and frost protection
- Loft ventilation in Portsmouth From £245
- Loft condensation investigation in Portsmouth From £145
- Pipe and tank lagging in Portsmouth From £95
Surveys and funding checks
- Loft insulation survey in Portsmouth From £95
- Thermal imaging survey in Portsmouth From £165
- Loft insulation grants check in Portsmouth No charge
Homes and buildings
Where we work around Portsmouth
Portsmouth sits about 15 miles from Southampton, measured in a straight line.
Nearby, we also cover Gosport, Fareham, Hayling Island and Havant.
| Postcode districts | PO1, PO5, PO2, PO4 |
|---|---|
| Council area | Portsmouth |
| County or area | Hampshire |
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 Portsmouth
Do you charge extra to travel to Portsmouth?
Not normally. Our guide prices include normal travel to Portsmouth. If an address needs a ferry or an unusually long journey, we tell you the cost before you book.
Do you take on jobs outside Portsmouth?
Yes. We also work in Gosport and Fareham and elsewhere in Hampshire.
Can you visit Portsmouth 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.
How do I pay for work in Portsmouth?
Payment terms are set out on your quote. We never ask for payment on the doorstep or in cash.
