Loft insulation in Hampshire
We cover Hampshire for loft insulation. It starts with a free survey and a fixed written quote.
We work in Southampton, Portsmouth, Basingstoke, Gosport and Waterlooville and everywhere in between.
Where we work around Hampshire
We work across the Hampshire, Portsmouth and Southampton council areas.
That covers the BH, GU, PO, RG, SO and SP postcode areas.
| Councils | Hampshire, Portsmouth and Southampton |
|---|---|
| Postcode areas | BH, GU, PO, RG, SO, SP |
| Towns listed | 23 |
What is loft insulation?
We lay the first layer to the depth of the joists, usually 100 mm, so it fills each bay edge to edge with no gaps. The second layer goes across the joists at right angles, which covers the timber and stops it acting as a cold bridge. More about loft insulation.
- Mineral wool to 270 to 300 mm across the whole loft floor
- Waste packaging removed
- Area under the cold water tank left clear so it cannot freeze
Why book with us in Hampshire
Honest about grants
If you might qualify for funding, we tell you before we quote.
Tidy work
Dust sheets on the route in and every bit of packaging taken away.
Downlights made safe
Fire-rated covers or a clear zone around recessed lights.
We measure before we quote
Existing depth, joist spacing, wiring and the tank are checked, not guessed.
How much does loft insulation cost in Hampshire?
Installing insulation in a home is zero-rated for VAT until 31 March 2027 and 5% after that, under HMRC's rules for energy-saving materials (notice 708/6). The Energy Saving Trust puts a typical professionally installed loft at about £750 from bare joists, or £600 to top up from 120 mm.
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.
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.
Questions about loft insulation in Hampshire
Do you cover the whole of Hampshire?
Yes. We cover every town and village in Hampshire, including Southampton, Portsmouth and Basingstoke.
Are your prices the same across Hampshire?
Yes. Our guide prices are the same everywhere we work, and they include normal travel. Your fixed price depends on your loft, not your postcode.
Will loft insulation make my loft colder?
Yes, and that is expected. The insulation keeps the heat in the rooms below, so the loft above runs closer to the outdoor temperature. That is why pipes and the tank are lagged as part of the job.
Do I need to empty my loft first?
The floor needs to be clear for the insulation to go down. If moving things yourself is difficult, tell us at the survey and we can price clearing and putting items back on raised boarding.
Loft insulation in other towns
Other loft work in Hampshire
- Loft insulation top-up in Hampshire From £395
- Loft boarding in Hampshire From £695
- Insulated loft hatches in Hampshire From £245
- Pipe and tank lagging in Hampshire From £95
- Commercial roof void insulation in Hampshire From £9 per m²
- Loft condensation investigation in Hampshire From £145
- Thermal imaging survey in Hampshire From £165
