Loft insulation top-up in Hampshire
For a loft insulation top-up anywhere in Hampshire, you get a free survey and a fixed written quote.
Towns we cover include Southampton, Portsmouth, Basingstoke, Gosport and Waterlooville.
Where we work around Hampshire
We work across the Hampshire, Portsmouth and Southampton council areas.
Postcode areas: BH, GU, PO, RG, SO and SP.
| Councils | Hampshire, Portsmouth and Southampton |
|---|---|
| Postcode areas | BH, GU, PO, RG, SO, SP |
| Towns listed | 23 |
What is a loft insulation top-up?
Before we quote we measure the existing layer in several places and check its condition. If it is wet, dirty, matted or full of droppings, laying fresh wool on top just buries the problem, so we say so and price removal instead. More about a loft insulation top-up.
- Tank jacket and pipe lagging in the loft
- Eaves ventilation kept clear
- Gaps in the existing layer filled
Why book with us in Hampshire
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.
Tank and pipes protected
Every insulation job includes a tank jacket and pipe lagging, so nothing freezes in a colder loft.
Clear contact details
Your quote says who to call with questions before, during and after the work.
Downlights made safe
Fire-rated covers or a clear zone around recessed lights.
How much does a loft insulation top-up 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 a loft insulation top-up in Hampshire
Can you quote for several properties in Hampshire?
Yes. Landlords and agents can send a list of addresses and we will survey them in as few visits as we can.
How do I book a survey in Hampshire?
Send the form or call us. We call back to agree a time and confirm it in writing.
Can new insulation go on top of old insulation?
Yes, if the old layer is dry, clean and reasonably even. If it is damp, contaminated or badly compressed we recommend removing it first.
Which way should the top-up layer run?
Across the joists, at right angles to the first layer. That covers the tops of the joists, which otherwise let heat escape along the timber.
