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Ballymena · County Antrim

Blown mineral wool insulation in Ballymena

Blown mineral wool is a water-repellent glass or stone fibre blown into the cavity as loose wool. We cover Ballymena and the wider BT42 postcode district, with the survey, result and fixed price all in writing.

Free survey in Ballymena

Covering Ballymena and the BT42 district. Tell us about the property and we will arrange a free survey and a fixed price.

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Blown mineral wool insulation for Ballymena properties

Our County Antrim coverage takes in Ballymena (BT42) and nearby Antrim, Larne and Newtownabbey. It is around 23 miles north-west of Belfast.

Ballymena properties with rendered or painted walls get a closer look at the outer finish, because cracked render can let rain behind it. If a wall in Ballymena is not suitable, for example because of an undiagnosed damp patch or a very exposed gable, you are told so in writing with the reason.

Exposure matters for every cavity wall. Parts of County Antrim face some of the heaviest wind-driven rain in the UK, especially exposed coastal and upland sites. Here the survey is stricter: some walls suit only certain certified systems, and some should not be filled at all.

On the rules side, in Ballymena 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.

Why choose mineral wool?

Mineral wool fibres are treated to shed water, so moisture that gets into the outer leaf runs down the cavity rather than tracking across. It is classed as non-combustible, which matters for some flats and taller buildings, and it is usually the lower-cost certified option.

What is included in Ballymena

  • Regulations route and guarantee named on the quote
  • Making good to the mortar colour
  • Certified mineral fibre system
  • Cavity barriers where needed

Guide prices for Ballymena

Blown mineral wool insulation guide prices
Blown mineral wool insulation guide pricesGuide price
Detached house£1,895–£3,395
Semi-detached house£1,295–£2,195
End-terrace house£1,095–£1,895
Detached bungalow£1,095–£1,895
Semi-detached bungalow£795–£1,395
Mid-terrace house£795–£1,295

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.

What happens next for a Ballymena property:

  1. Tell us about the property

    Postcode, property type and what you need.

  2. Free survey

    Walls, cavity, condition and exposure checked and photographed.

  3. Written result and price

    Suitable, suitable after repairs, or not suitable, with a fixed price.

  4. Work and paperwork

    Installation, making good, and the regulations and guarantee paperwork.

Last reviewed 19 October 2026.

Blown mineral wool insulation in Ballymena: questions

Do you work on rented homes in Ballymena?

Yes. Landlords and agents in Ballymena can book batch visits, and work is arranged around tenants.

Is my Ballymena home too exposed for cavity insulation?

Parts of County Antrim get some of the heaviest wind-driven rain in the UK, so the survey is stricter and some walls are better left unfilled. The survey records the exposure of each wall before recommending a material, or recommending against filling.

Are there grants for insulation in Ballymena?

In Northern Ireland, the Affordable Warmth Scheme helps eligible households with a gross income under £23,000. We cannot promise funding, but we will point you to the right official route.

How much does blown mineral wool insulation cost in Ballymena?

Our guide ranges for blown mineral wool insulation are shown on this page. The fixed price for your Ballymena property is confirmed in writing after the survey, before any work starts.

Nearby towns

Book a free survey in Ballymena

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