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Ayrshire · Scotland

Cavity insulation for new builds and extensions in Ayrshire

Ayrshire properties get the same survey-first approach to cavity insulation for new builds and extensions: check, explain, price, then book. 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 Ayrshire

Tell us about the property and we will arrange a free survey and a fixed price.

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Cavity insulation for new builds and extensions across Ayrshire

We cover 3 towns in Ayrshire: Kilmarnock, Ayr and Irvine.

Before any material is chosen, exposure is checked. Parts of Ayrshire 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 semi-detached and terraced homes in Ayrshire, cavity barriers are fitted where your wall meets your neighbour's so the fill stays on your side. Most Ayrshire 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.

Building standards in Scotland

In Scotland, work associated with thermal insulating material within a wall is listed in schedule 3 of the Building (Scotland) Regulations as work that does not need a building warrant. It must still meet the building standards, so the survey still checks that the wall and the chosen material are suitable, including exposure to wind-driven rain.

Funding in Scotland

  • Home Energy Scotland is the starting point for the Home Energy Scotland Grant and Loan and for Warmer Homes Scotland, which can include cavity wall insulation.
  • Many councils also run area-based schemes for insulation in particular streets or estates.
  • ECO4 runs until 31 December 2026 across Great Britain, including Scotland.

Sources: Scottish Government: building work not requiring a warrant (schedule 3); Home Energy Scotland; mygov.scot: grants and loans for energy saving improvements; GOV.UK: extending the ECO4 end date, government response.

Extensions that join an older house

Where an extension meets an existing cavity wall, the junction is a weak point. We can borescope and fill the existing wall at the same time so the old and new walls perform together.

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 Ayrshire

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.

The steps for cavity insulation for new builds and extensions in Ayrshire:

  1. Get in touch

    Online, by phone or WhatsApp, whichever suits you.

  2. Survey visit

    The surveyor checks each wall and looks into the cavity where needed.

  3. Your result in writing

    What we found, what it means, and a fixed price if work is needed.

  4. Booked work

    Carried out by the installer named on your quote, with their scheme registrations.

Last reviewed 19 October 2026.

Cavity insulation for new builds and extensions in Ayrshire: questions

Do you cover all of Ayrshire?

Yes. We cover 3 towns across Ayrshire, including Kilmarnock and Ayr and Irvine, and the villages around them. Island and remote addresses are surveyed by arrangement.

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

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.

How soon can you visit in Ayrshire?

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 Ayrshire?

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

Cavity insulation for new builds and extensions in nearby areas

Book a free survey in Ayrshire

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