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Craigavon · County Armagh

Cavity wall insulation in Craigavon

Cavity wall insulation fills the gap between the two leaves of a brick or block wall with a certified insulating material, blown in through small holes drilled from outside. We cover Craigavon and the wider BT65 postcode district, with the survey, result and fixed price all in writing.

Free survey in Craigavon

Covering Craigavon and the BT65 district. Tell us about the property and we will arrange a free survey and a fixed price.

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Cavity wall insulation for Craigavon properties

Our County Armagh coverage takes in Craigavon (BT65) and nearby Lurgan, Portadown and Armagh. Craigavon is one of the main towns we cover in County Armagh.

Most Craigavon houses built from the 1920s onwards have cavity walls, but the survey still checks each one: cavity width, debris, the condition of the brickwork and how exposed each wall is. A suitable wall in Craigavon is usually filled in a single day from outside, with drill holes made good to match the pointing.

Local weather affects which walls can be filled. 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.

On compliance, in Craigavon 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.

Which material goes in?

Usually blown mineral wool or bonded polystyrene beads, both third-party certified for cavity fill. The survey picks the system that suits your cavity width, wall condition and exposure zone, not whichever is cheapest on the day. Old-style urea-formaldehyde foam is not used.

What is included in Craigavon

  • Guarantee and installer named on your quote
  • Cavity barriers at party walls
  • Drilling, filling and colour-matched making good
  • Certified mineral wool or bonded bead system

Guide prices for Craigavon

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 Craigavon:

  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 Craigavon: questions

Is the survey free in Craigavon?

Yes when it is for an install quote. Standalone reports for Craigavon buyers, sellers or landlords who do not need an install quote are priced before you book.

How much does cavity wall insulation cost in Craigavon?

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

Do you cold-call in Craigavon?

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 my Craigavon home too exposed for cavity insulation?

Parts of County Armagh 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.

Nearby towns

Book a free survey in Craigavon

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