Loft insulation in Lisburn
If you need loft insulation in Lisburn, we can help, and it starts with a free survey and a fixed written quote.
That includes addresses in 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 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
- 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 Lisburn
Tank and pipes protected
Every insulation job includes a tank jacket and pipe lagging, so nothing freezes in a colder loft.
Clear contact details
Your quote says who to call with questions before, during and after the work.
Boarding done properly
Storage boards go on loft legs, never straight onto the insulation.
Eaves kept clear
Insulation is held back from the eaves so the loft can still ventilate.
How much does 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 loft insulation in Lisburn
Can you visit Lisburn 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.
Do you cover all of BT27?
Yes, we cover the BT27 postcode district and the districts around Lisburn.
Is loft work in Lisburn different from anywhere else?
The method is the same, but older terraces, cottages and newer estates each have their own quirks: lath ceilings, low pitches or trussed roofs. We plan for the loft we find.
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.
Does loft insulation need building control approval?
On its own it usually does not, but the work still has to meet the energy standard. The rules differ across England, Wales, Scotland and Northern Ireland, so we confirm the position for your address on the quote.
