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Northern Ireland

Cavity wall insulation in County Armagh

Cavity wall insulation, top-ups, removals and surveys in County Armagh, arranged survey-first with a fixed price in writing.

Installer on a low platform filling the brick wall of a 1930s semi-detached house through a grid of drilled holes, with the delivery hose running to a van

Free survey in County Armagh

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.

Our cavity wall work in County Armagh

We cover 4 towns in County Armagh, from Craigavon to Lurgan, plus the villages and districts around them.

Parts of County Armagh 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.

Choose a service below for prices and how it works locally, or a town for everything we do there.

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.

Cavity wall insulation prices in County Armagh

Cavity wall insulation guide prices
Cavity wall insulation guide pricesGuide price
Detached house£2,295–£3,795
Semi-detached house£1,495–£2,495
End-terrace house£1,295–£2,195
Detached bungalow£1,295–£2,195
Semi-detached bungalow£895–£1,595
Mid-terrace house£795–£1,395

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.

How it works in County Armagh

  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.

Cavity wall insulation in County Armagh: questions

Do you cover all of County Armagh?

Yes. We cover 4 towns across County Armagh, including Craigavon, Portadown, Armagh and Lurgan, and the villages around them. Island and remote addresses are surveyed by arrangement.

How soon can you visit in County Armagh?

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.

Do you work on rented homes in County Armagh?

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

Do you cold-call in County Armagh?

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

Is there VAT on cavity wall insulation in County Armagh?

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

Areas near County Armagh

Book a free survey in County Armagh

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