Blown loft insulation in Derry/Londonderry

Looking for blown loft insulation in Derry/Londonderry? We cover Derry/Londonderry and the rest of County Londonderry, with a free survey and a fixed written quote.

Postcode districts we cover here include BT48. The local authority is Derry City and Strabane.

Guide price £595 to £795 Derry/Londonderry, County Londonderry

Where we work around Derry/Londonderry

Other towns close by include Limavady.

Postcode districts	BT48
Council area	Derry City and Strabane
County or area	County Londonderry

What is blown loft insulation?

The machine stays outside or on the landing and the hose runs up to the loft. Depth markers fixed to the joists or trusses show the installed depth, and the fibre settles into corners that rolls would bridge. More about blown loft insulation.

Loose-fill mineral wool to the agreed depth
Hatch area finished with a retaining upstand
Eaves trays to keep ventilation open

Why book with us in Derry/Londonderry

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.

Downlights made safe

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

Clear contact details

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

Photos of the finished loft

You see the work done without climbing the ladder.

How much does blown loft insulation cost in Derry/Londonderry?

£595 to £795Terraced house, average loft. 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 Northern Ireland

Northern Ireland has its own Building Regulations, with energy guidance in Technical Booklet F1. Upgrading loft insulation may count as a thermal alteration, so check with your council's building control. How the rules work across the UK.

Questions about blown loft insulation in Derry/Londonderry

Can you visit Derry/Londonderry 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.

Will I get a written quote for work in Derry/Londonderry?

Yes. Every quote is in writing with the work, the price and what is included, so you can compare it properly.

How do I pay for work in Derry/Londonderry?

Payment terms are set out on your quote. We never ask for payment on the doorstep or in cash.

Is it messy?

The hose runs through the house, so we sheet the route and the landing. The fibre stays in the loft.

Does blown insulation settle?

Mineral wool loose fill settles a little, which is allowed for in the depth we install. The depth markers let you check it later.