Loft insulation in Derry/Londonderry

Where we work around Derry/Londonderry

We also cover Limavady.

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

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.

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

Why book with us in Derry/Londonderry

Plain-English advice

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

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.

Eaves kept clear

Insulation is held back from the eaves so the loft can still ventilate.

How much does loft insulation cost in Derry/Londonderry?

£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 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 loft insulation in Derry/Londonderry

Do you charge extra to travel to Derry/Londonderry?

Not normally. Our guide prices include normal travel to Derry/Londonderry. If an address needs a ferry or an unusually long journey, we tell you the cost before you book.

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.

What do I need to do before you arrive in Derry/Londonderry?

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.

Do I need to empty my loft first?

The floor needs to be clear for the insulation to go down. If moving things yourself is difficult, tell us at the survey and we can price clearing and putting items back on raised boarding.