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Magherafelt · County Londonderry

Blown mineral wool insulation in Magherafelt

Blown mineral wool insulation in Magherafelt starts with a free survey of the property, then a written result and a fixed price before any work is booked. Blown mineral wool is a water-repellent glass or stone fibre blown into the cavity as loose wool.

Free survey in Magherafelt

Covering Magherafelt and the BT45 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 Magherafelt properties

If your property is in Magherafelt or the BT45 district or nearby Limavady, Coleraine and Derry, it is within our County Londonderry coverage. It is about 31 miles south-east of Derry.

A suitable wall in Magherafelt is usually filled in a single day from outside, with drill holes made good to match the pointing. Magherafelt properties with rendered or painted walls get a closer look at the outer finish, because cracked render can let rain behind it.

Before any material is chosen, exposure is checked. Parts of County Londonderry 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.

For regulations, in Magherafelt 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.

When is it not the right choice?

Very narrow or uneven cavities, walls with lots of mortar snots and debris, and some very exposed elevations can be better suited to bonded bead, which flows around obstructions and is certified for a wider range of exposure zones in some systems. The survey says which and why.

What is included in Magherafelt

  • Regulations route and guarantee named on the quote
  • Certified mineral fibre system
  • Density and drill pattern recorded
  • Making good to the mortar colour

Guide prices for Magherafelt

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.

From enquiry to finish in Magherafelt:

  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 Magherafelt: questions

Are there grants for insulation in Magherafelt?

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 Magherafelt?

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

Is there VAT on blown mineral wool insulation in Magherafelt?

Installing insulation in a home is currently zero-rated for VAT until 31 March 2027, then 5%. Commercial buildings are standard-rated.

Do you work on rented homes in Magherafelt?

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

Nearby towns

Book a free survey in Magherafelt

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