Loft InsulationInstallers

Loft insulation in Stevenage

We fit loft insulation for homes in Stevenage and across Hertfordshire, starting with a free survey and a fixed written quote.

Postcode districts we cover here include SG1, SG2 and SG4, in the Hertfordshire council area.

Guide price £495 to £745 Stevenage, Hertfordshire
Mineral wool loft insulation laid across the joists

Where we work around Stevenage

Stevenage is about 19 miles from Watford as the crow flies.

We work in neighbouring Hitchin, Letchworth Garden City, Welwyn Garden City and Harpenden too.

Postcode districtsSG1, SG2, SG4, SG3
Council areaHertfordshire
County or areaHertfordshire

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 finished depth sits at 270 mm or more, the depth the Energy Saving Trust recommends. 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 Stevenage

Tank and pipes protected

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

Tidy work

Dust sheets on the route in and every bit of packaging taken away.

Downlights made safe

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

Honest about grants

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

How much does loft insulation cost in Stevenage?

£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 Stevenage

Can you visit Stevenage outside working hours?

Ask about early, late or weekend appointments when you get in touch, and we will tell you honestly what we can offer.

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

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

How soon can you visit a home in Stevenage?

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.

How long does it take to insulate a loft?

Most lofts in houses take a single day. A large bungalow loft, a loft that needs clearing first or one with awkward access can run into a second day.

Can you insulate around downlights?

Recessed downlights need clearance or a fire-rated cover so they do not overheat. We fit covers where needed and leave a clear zone around fittings that cannot be covered.

Loft insulation in other towns

Other loft work in Stevenage

Find out what your loft needs

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