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County Tyrone · Northern Ireland

Cavity insulation for new builds and extensions in County Tyrone

We arrange cavity insulation for new builds and extensions throughout County Tyrone, from Omagh to Dungannon and Cookstown. For new walls the cavity is insulated as it is built, using full-fill mineral wool batts or partial-fill boards fixed to the inner leaf.

Bricklayer building a new cavity wall with mineral wool batts between the block and brick leaves

Free survey in County Tyrone

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.

Cavity insulation for new builds and extensions across County Tyrone

We cover 4 towns in County Tyrone: Omagh, Dungannon, Cookstown and Strabane.

Wind-driven rain is the first thing the surveyor weighs up. Parts of County Tyrone 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.

A suitable wall in County Tyrone is usually filled in a single day from outside, with drill holes made good to match the pointing. If a wall in County Tyrone 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.

Building control in Northern Ireland

In Northern Ireland, inserting insulation into an existing cavity wall needs a building control application to your council before the work. We make sure the application route is agreed and confirmed in writing before any drilling starts.

Funding in Northern Ireland

  • The Affordable Warmth Scheme, run with the NI Housing Executive, helps owner-occupiers and private tenants with a total gross household income under £23,000; cavity wall insulation is a priority measure where suitable.
  • The NI Sustainable Energy Programme funds energy efficiency schemes through participating providers.
  • ECO4 does not apply in Northern Ireland.

Sources: Building Control NI: frequently asked questions; Belfast City Council: what are the building regulations; NI Housing Executive: Affordable Warmth Scheme; Utility Regulator: NI Sustainable Energy Programme.

What we work from

Your architect's or designer's specification and the energy calculation for the job. We match the product, thickness and fixing to that spec, keep cavities clean as the walls rise, and fit cavity trays, closers and stop ends where shown so the building control inspection goes smoothly.

What is included

  • Batts or boards to the specified U-value
  • Clean-cavity working
  • Trays, closers and stop ends as drawn
  • Coordination with your bricklayers
  • Photo record for building control

Cavity insulation for new builds and extensions prices in County Tyrone

Cavity insulation for new builds and extensions guide prices
Cavity insulation for new builds and extensions guide pricesGuide price
Full-fill batts supplied and fitted, per m²£9–£16
Partial-fill boards supplied and fitted, per m²£14–£26

Prices are shown before any VAT; the VAT treatment for new-build work is confirmed on your quote. 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 County Tyrone:

  1. Send your details

    A minute online, or call the free number.

  2. We check the walls

    Construction, cavity width, debris, damp and wind-driven rain exposure.

  3. You decide

    Plain-English result and a fixed price, with no pressure to book.

  4. Job done properly

    Holes made good, paperwork handed over, guarantee details confirmed.

Last reviewed 19 October 2026.

Cavity insulation for new builds and extensions in County Tyrone: questions

Do you cover all of County Tyrone?

Yes. We cover 4 towns across County Tyrone, including Omagh, Dungannon, Cookstown and Strabane, and the villages around them. Island and remote addresses are surveyed by arrangement.

How much does cavity insulation for new builds and extensions cost in County Tyrone?

Our guide ranges for cavity insulation for new builds and extensions are shown on this page. The fixed price for your County Tyrone property is confirmed in writing after the survey, before any work starts.

Do you work on rented homes in County Tyrone?

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

Is there VAT on cavity insulation for new builds and extensions in County Tyrone?

Building a new home is usually zero-rated when supplied by the builder; supply-only materials are standard-rated. The VAT treatment is confirmed on your quote.

Cavity insulation for new builds and extensions in nearby areas

Book a free survey in County Tyrone

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