Loft InsulationInstallers

Loft insulation top-up in Streatham

Looking for a loft insulation top-up in Streatham? We cover Streatham and the rest of Greater London, with a free survey and a fixed written quote.

We cover postcodes including SW16, SW12 and SE27, inside the Lambeth council area.

Guide price £395 to £545 Streatham, Greater London
A loft insulation top-up layer laid across older insulation

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 a loft insulation top-up?

Before we quote we measure the existing layer in several places and check its condition. If it is dry, even and not contaminated, we keep it and lay the top-up across it at right angles. More about a loft insulation top-up.

  • Eaves ventilation kept clear
  • Depth check and photos before and after
  • Tank jacket and pipe lagging in the loft

Why book with us in Streatham

Plain-English advice

We explain what we find in plain English, and say so when nothing needs doing.

We measure before we quote

Existing depth, joist spacing, wiring and the tank are checked, not guessed.

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.

How much does a loft insulation top-up cost in Streatham?

£395 to £545Terraced house, average loft, topping up from about 100 mm. 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 a loft insulation top-up in Streatham

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.

Can a landlord in Streatham book work for a tenanted house?

Yes. We can arrange access with the tenant directly and send you photos once the work is finished.

Do you take on jobs outside Streatham?

Yes. We also work in Clapham and Mitcham and elsewhere in Greater London.

Can I still store things in the loft after a top-up?

Not directly on the insulation. A 270 mm layer stands well above the joists, so storage needs raised boarding on loft legs.

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.

Loft insulation top-up 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.