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Belfast · County Antrim

Loft insulation in Belfast

Loft insulation lays mineral wool between and over the ceiling joists to the recommended depth, cutting heat loss through the roof. We cover Belfast and the wider BT1 postcode district, with the survey, result and fixed price all in writing.

Free survey in Belfast

Covering Belfast and the BT1 district. Tell us about the property and we will arrange a free survey and a fixed price.

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We use your details only to answer this enquiry and arrange your visit, sharing them only with the registered installer we appoint for your job and the providers named in our privacy notice. No marketing lists, no cold calls.

Loft insulation for Belfast properties

If your property is in Belfast or the BT1 district or nearby Newtownabbey, Lisburn and Carrickfergus, it is within our County Antrim coverage. Belfast is one of the main towns we cover in County Antrim.

In Belfast homes this is often done on the same visit as a cavity fill, which saves a second trip. Small measures like this are often among the cheapest per pound saved, and they suit Belfast homes of every age.

On the rules side, if cavity wall insulation follows in Belfast, inserting cavity wall insulation needs a building control application to the council before work starts.

Funding in Northern Ireland

In Northern Ireland, the Affordable Warmth Scheme helps eligible households with a gross income under £23,000.

Sources: NI Housing Executive: Affordable Warmth Scheme; Utility Regulator: NI Sustainable Energy Programme.

Northern Ireland note

In Northern Ireland, councils treat roof-space insulation as work that needs building control approval. We confirm the route before work.

What is included in Belfast

  • Depth and ventilation check
  • Mineral wool to the recommended depth
  • Tank and pipe lagging
  • Loft hatch draught-proofing

Guide prices for Belfast

Loft insulation guide prices
Loft insulation guide pricesGuide price
Loft insulation to 270mm, typical house£395–£895
Loft top-up from 100mm£295–£595

No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). Guide ranges only: the fixed price is confirmed in writing before any work starts, and anything that could not be seen at survey is agreed with you first.

The steps for loft insulation in Belfast:

  1. Get in touch

    Online, by phone or WhatsApp.

  2. Survey visit

    We check the space, what is there now and how it is ventilated.

  3. Your quote in writing

    A fixed price, with any extras listed separately.

  4. Booked work

    Carried out by the installer named on your quote.

Last reviewed 19 October 2026.

Loft insulation in Belfast: questions

Do you cover Belfast?

Yes. Belfast and the BT1 postcode district are within our County Antrim coverage, along with nearby Newtownabbey and Lisburn.

Do you cold-call in Belfast?

No. We only come out when you have asked us to. If someone cold-calls offering free insulation, check before you agree to anything.

Can you do this on the same visit as cavity wall insulation in Belfast?

Often, yes. If your Belfast home also has unfilled cavity walls, both can be surveyed together and priced separately on one quote.

How soon can you visit in Belfast?

We arrange dates when you get in touch. Availability varies through the year, so we give you real dates rather than a promise on the website.

Nearby towns

Book a free survey in Belfast

Free survey with an install quote. Written result. Fixed price before any work.