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County Antrim · Northern Ireland

Commercial cavity wall insulation in County Antrim

We arrange commercial cavity wall insulation throughout County Antrim, from Belfast to Lisburn and Newtownabbey. Commercial cavity wall insulation fills cavity walls in offices, schools, surgeries, churches and light industrial buildings.

Two-storey red brick office building on a business park

Free survey in County Antrim

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.

Commercial cavity wall insulation across County Antrim

We cover 7 towns in County Antrim, including Belfast, Lisburn, Newtownabbey, Carrickfergus, Ballymena and more.

Wind-driven rain is the first thing the surveyor weighs up. Parts of County Antrim 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 landlords and managing agents in County Antrim, we survey in batches and return a result sheet and fixed price per address. Work on County Antrim rented homes and blocks is booked around tenants and residents, with access arranged through your agent if you prefer.

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 is different on commercial jobs

Access is planned around opening hours, often with towers or MEWPs. Material choice takes account of building use and fire requirements, so non-combustible mineral wool is often specified. Work is usually standard-rated for VAT unless the building qualifies for a relief, which we confirm on the quote.

What is included

  • Survey and specification
  • Access and method statement
  • Out-of-hours working where needed
  • O&M information

Commercial cavity wall insulation prices in County Antrim

Commercial cavity wall insulation guide prices
Commercial cavity wall insulation guide pricesGuide price
Commercial cavity fill, per m² (+VAT)£22–£36
Access towers or MEWP, per day (+VAT)£195–£495

Commercial prices are shown plus VAT where it applies. 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.

The steps for commercial cavity wall insulation in County Antrim:

  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.

Commercial cavity wall insulation in County Antrim: questions

Do you cover all of County Antrim?

Yes. We cover 7 towns across County Antrim, including Belfast, Lisburn, Newtownabbey and Carrickfergus, and the villages around them. Island and remote addresses are surveyed by arrangement.

How much does commercial cavity wall insulation cost in County Antrim?

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

How soon can you visit in County Antrim?

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.

Is the survey free in County Antrim?

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

Commercial cavity wall insulation in nearby areas

Book a free survey in County Antrim

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