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Portadown · County Armagh

Party wall cavity insulation in Portadown

From the first survey to the paperwork, party wall cavity insulation in Portadown is handled by one team and one contract. Party wall insulation fills the cavity in the separating wall between two houses, which otherwise lets warm air rise up and out through the loft.

Free survey in Portadown

Covering Portadown and the BT62 district. Tell us about the property and we will arrange a free survey and a fixed price.

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Party wall cavity insulation for Portadown properties

If your property is in Portadown or the BT62 district or nearby Craigavon, Lurgan and Armagh, it is within our County Armagh coverage. It is about 3 miles south-west of Craigavon.

A suitable wall in Portadown is usually filled in a single day from outside, with drill holes made good to match the pointing. For semi-detached and terraced homes in Portadown, cavity barriers are fitted where your wall meets your neighbour's so the fill stays on your side.

Every elevation is judged on its own exposure. 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.

As for paperwork, in Portadown 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 a party wall loses heat

Many semi-detached and terraced homes built with cavity separating walls have that cavity open to the loft. Air moves up the cavity and out at the top, a loss sometimes called the party wall bypass. Filling the cavity and sealing the top stops it.

What is included in Portadown

  • Written result and photos
  • Neighbour notification guidance
  • Loft inspection and borescope check
  • Sealing at the top of the cavity

Guide prices for Portadown

Party wall cavity insulation guide prices
Party wall cavity insulation guide pricesGuide price
Party wall, two-storey house£595–£895
Party wall, bungalow£395–£695

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 Portadown property:

  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.

Party wall cavity insulation in Portadown: questions

Is there VAT on party wall cavity insulation in Portadown?

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

How soon can you visit in Portadown?

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 cold-call in Portadown?

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

How much does party wall cavity insulation cost in Portadown?

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

Nearby towns

Book a free survey in Portadown

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