Loft InsulationInstallers

Loft insulation in Streatham

Streatham is part of the area we cover in Greater London. For loft insulation, you get a free survey and a fixed written quote.

That includes addresses in SW16, SW12 and SE27, in the Lambeth council area.

Guide price £495 to £745 Streatham, Greater London
Mineral wool loft insulation laid across the joists

Where we work around Streatham

Streatham is about 5 miles from central London as the crow flies.

Nearby, we also cover Clapham, Mitcham, Brixton and Wimbledon.

Postcode districtsSW16, SW12, SE27, SW17
Council areaLambeth
County or areaGreater London

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.

  • Tank jacket and pipe lagging in the loft
  • Waste packaging removed
  • Mineral wool to 270 to 300 mm across the whole loft floor

Why book with us in Streatham

No pressure selling

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

Tank and pipes protected

Every insulation job includes a tank jacket and pipe lagging, so nothing freezes in a colder loft.

Boarding done properly

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

Honest about grants

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

How much does loft insulation cost in Streatham?

£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 Streatham

How soon can you visit a home in Streatham?

We call you back to agree a time that suits you, and confirm the date in writing. Availability changes week to week, so we will give you the earliest slot we have.

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

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.

Is loft work in Streatham different from anywhere else?

The method is the same, but older terraces, cottages and newer estates each have their own quirks: lath ceilings, low pitches or trussed roofs. We plan for the loft we find.

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.

Loft insulation in other towns

Other loft work in Streatham

Find out what your loft needs

Free survey and a fixed written quote for installation work. Guide prices first if you prefer.