Blown loft insulation in Lisburn
Homes in Lisburn get the same service as everywhere else we work in County Antrim. For blown loft insulation, that means a free survey and a fixed written quote.
We cover postcodes including BT27, BT28 and BT17, which fall under Lisburn and Castlereagh council.

Where we work around Lisburn
Lisburn is about 7 miles from Belfast as the crow flies.
Other towns close by include Belfast and Newtownabbey.
| Postcode districts | BT27, BT28, BT17, BT10 |
|---|---|
| Council area | Lisburn and Castlereagh |
| County or area | County Antrim |
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.
- Hatch area finished with a retaining upstand
- Depth markers left in place
- Loose-fill mineral wool to the agreed depth
Why book with us in Lisburn
Plain-English advice
We explain what we find in plain English, and say so when nothing needs doing.
Tidy work
Dust sheets on the route in and every bit of packaging taken away.
No pressure selling
You get everything in writing and decide in your own time.
Boarding done properly
Storage boards go on loft legs, never straight onto the insulation.
How much does blown loft insulation cost in Lisburn?
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 blown loft insulation in Lisburn
How soon can you visit a home in Lisburn?
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 do I pay for work in Lisburn?
Payment terms are set out on your quote. We never ask for payment on the doorstep or in cash.
Can a landlord in Lisburn book work for a tenanted house?
Yes. We can arrange access with the tenant directly and send you photos once the work is finished.
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.
Is blown insulation better than rolls?
It performs about the same for the same depth. It is the faster and neater option in lofts that are awkward to work in, and rolls are better where you want boarding later.
