Loft insulation in Portsmouth

Where we work around Portsmouth

Portsmouth is about 15 miles from Southampton as the crow flies.

Other towns close by include Gosport, Fareham, Hayling Island and Havant.

Postcode districts	PO1, PO5, PO2, PO4
Council area	Portsmouth
County or area	Hampshire

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.

Waste packaging removed
Cables lifted clear of the insulation where possible
Area under the cold water tank left clear so it cannot freeze

Why book with us in Portsmouth

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.

Photos of the finished loft

You see the work done without climbing the ladder.

Downlights made safe

Fire-rated covers or a clear zone around recessed lights.

Boarding done properly

Storage boards go on loft legs, never straight onto the insulation.

How much does loft insulation cost in Portsmouth?

£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).

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.

Questions about loft insulation in Portsmouth

Do you take on jobs outside Portsmouth?

Yes. We also work in Gosport and Fareham and elsewhere in Hampshire.

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.

What do I need to do before you arrive in Portsmouth?

Clear a path to the hatch and, if you can, move stored items away from the area we will be working in. Tell us about anything heavy or fragile.

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.

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.