Insulation in Lisburn

Q: How much does insulation cost in Lisburn?

Insulation in Lisburn typically costs between £715 and £6,036 installed, depending on system size (modelled estimate). A typical mid-range system costs around £2,100. Actual costs vary depending on property and installer.

Q: How do I find a good installer in Lisburn?

We recommend getting at least 3 quotes from qualified installers. Check online reviews and verify that the installer holds relevant qualifications before signing any contract.

£715 to £6,036 installed, and the grants that apply in Lisburn and official data for the council area.

Request a free quote See the local data

By Home Energy Quotes · Updated September 2026 · Lisburn, Lisburn and Castlereagh

What insulation costs in Lisburn

Loft only

£715–£1,705

Saves up to £233 a year. Pays back in about 5 years.

Loft + cavity walls (most common)

£1,365–£3,255

Saves up to £478 a year. Pays back in about 4 years.

Full package

£2,531–£6,036

Saves up to £546 a year. Pays back in about 7 years.

Source: Home Energy Quotes Cost Index, costs modelled September 2026, savings at the October to December 2026 price cap. Prices are estimates and include installation and VAT. Actual costs may vary.

Lisburn in numbers

Published statistics for the Lisburn and Castlereagh council area, not our estimates.

The median EPC energy score for homes in the Lisburn and Castlereagh council area is 66, which is band D.

Lisburn and Castlereagh council area	Figure	Source
Median EPC energy score	66 (band D)	Department for Communities, EPCs to March 2023
Households on mains gas heating only	41%	Census 2021, NISRA
Electricity network operator	NIE Networks (Northern Ireland)	NIE Networks

These are published official statistics for the Lisburn and Castlereagh council area, which covers Lisburn, not Home Energy Quotes estimates. Sources checked 6 October 2026.

Is Lisburn a good place for insulation?

The area’s housing stock includes a range of properties suited to insulation installations throughout Lisburn. Combined with Northern Ireland’s energy prices, insulation installations here may offer good value (individual results will vary).

Lisburn has a population of 51,447, and the area falls within the Northern Ireland region. We recommend getting at least 3 quotes to compare prices.

Find Installers in Lisburn

We recommend getting at least 3 quotes from qualified installers before making a decision. Check reviews, ask for local references, and make sure warranties are clearly stated in writing.

Request a free quote →

What to check before hiring an installer in Lisburn

Qualifications — check the installer holds relevant qualifications and certifications for insulation before signing any contract
Local references — ask for completed jobs in Lisburn or Lisburn and Castlereagh
Reviews — check online reviews before committing
Warranty — product and workmanship warranties should be clearly stated in writing
3 quotes minimum — we recommend comparing at least three quotes to ensure you get a fair price

Questions about insulation in Lisburn

How much does insulation cost in Lisburn?

Insulation in Lisburn costs between £715 and £6,036 installed, depending on system size. A typical mid-range system costs around £2,100 including installation and VAT (modelled estimate).

How energy efficient are homes in Lisburn?

The median EPC energy score for homes in the Lisburn and Castlereagh council area, which covers Lisburn, is 66, which is band D.

Is there a grant for insulation in Lisburn?

Households in Lisburn with a gross income under £23,000 may qualify for the Affordable Warmth Scheme, which prioritises insulation and offers up to £7,500, or up to £10,000 for solid wall insulation. Insulation installation is zero-rated for VAT until March 2027.

How long is the payback period in Lisburn?

The estimated payback period in Lisburn is typically around 4 years, based on estimated savings of up to £478 a year for a typical home. Actual payback depends on your property type, current insulation level and heating system.

Do I need planning permission in Lisburn?

Most insulation installations fall under permitted development rights and do not require planning permission. However, listed buildings, conservation areas and flats may need approval. Always check with your local planning authority in Lisburn before installation.

How do I find a good installer in Lisburn?

We recommend getting at least 3 quotes from qualified installers. Check online reviews and verify that the installer holds relevant qualifications before signing any contract.

Get quotes for your home in Lisburn

Up to three approved installers who cover Lisburn may contact you. Free, no obligation.

Request a free quote

Lisburn on the map

Lisburn, Lisburn and Castlereagh and the surrounding area.

Insulation in nearby towns

Last reviewed: 15 September 2026. Costs are modelled estimates from the Home Energy Quotes Cost Index — see how we calculate them. Grant rates are checked against GOV.UK.