Loft insulation in Carrickfergus
Looking for loft insulation in Carrickfergus? We cover Carrickfergus and the rest of County Antrim, with a free survey and a fixed written quote.
We cover the BT38 postcode districts, inside the Mid and East Antrim council area.

Where we work around Carrickfergus
As the crow flies, Carrickfergus is roughly 10 miles from Belfast.
Other towns close by include Newtownabbey, Larne and Belfast.
| Postcode districts | BT38 |
|---|---|
| Council area | Mid and East Antrim |
| County or area | County Antrim |
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.
- Area under the cold water tank left clear so it cannot freeze
- Waste packaging removed
- Cables lifted clear of the insulation where possible
Why book with us in Carrickfergus
We measure before we quote
Existing depth, joist spacing, wiring and the tank are checked, not guessed.
Tank and pipes protected
Every insulation job includes a tank jacket and pipe lagging, so nothing freezes in a colder loft.
No pressure selling
You get everything in writing and decide in your own time.
Honest about grants
If you might qualify for funding, we tell you before we quote.
How much does loft insulation cost in Carrickfergus?
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).
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 Carrickfergus
Do you take on jobs outside Carrickfergus?
Yes. We also work in Newtownabbey and Larne and elsewhere in County Antrim.
How do I pay for work in Carrickfergus?
Payment terms are set out on your quote. We never ask for payment on the doorstep or in cash.
Do you cover all of BT38?
Yes, we cover the BT38 postcode district and the districts around Carrickfergus.
How deep should loft insulation be?
The Energy Saving Trust recommends at least 270 mm of mineral wool, and that is the depth we install as standard. Building regulations also set an energy standard for the roof when a loft is insulated. It differs between England, Wales, Scotland and Northern Ireland, so we confirm the target for your address on the quote.
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 Carrickfergus
- Loft insulation top-up in Carrickfergus From £395
- Loft boarding in Carrickfergus From £695
- Insulated loft hatches in Carrickfergus From £245
- Pipe and tank lagging in Carrickfergus From £95
- Room-in-roof insulation in Carrickfergus From £3,995
- Loft insulation removal in Carrickfergus From £445
- Period home loft insulation in Carrickfergus From £995
