Loft insulation in West Sussex

Where we work around West Sussex

Council areas covered: West Sussex.

Postcodes starting BN, GU, PO and RH are all inside our area.

Councils	West Sussex
Postcode areas	BN, GU, PO, RH
Towns listed	12

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.

Eaves kept clear, with ventilation trays where air could be blocked
Tank jacket and pipe lagging in the loft
Mineral wool to 270 to 300 mm across the whole loft floor

Why book with us in West Sussex

Honest about grants

If you might qualify for funding, we tell you before we quote.

No pressure selling

You get everything in writing and decide in your own time.

Photos of the finished loft

You see the work done without climbing the ladder.

Clear contact details

Your quote says who to call with questions before, during and after the work.

How much does loft insulation cost in West Sussex?

£495 to £745Terraced house, average loft, from bare joists. Free survey and a fixed written quote before any work.

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.

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.

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

Questions about loft insulation in West Sussex

Which council covers my address in West Sussex?

Addresses in West Sussex come under West Sussex council. The council matters for building control questions and some funding schemes.

How do I book a survey in West Sussex?

Send the form or call us. We call back to agree a time and confirm it in writing.

How deep should loft insulation be?

The Energy Saving Trust recommends at least 270 mm of mineral wool, and that is the depth we install as standard. Building regulations also set an energy standard for the roof when a loft is insulated. It differs between England, Wales, Scotland and Northern Ireland, so we confirm the target for your address on the quote.

Does loft insulation need building control approval?

On its own it usually does not, but the work still has to meet the energy standard. The rules differ across England, Wales, Scotland and Northern Ireland, so we confirm the position for your address on the quote.