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Hamilton · Lanarkshire

Cavity insulation for new builds and extensions in Hamilton

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. We cover Hamilton and the wider ML3 postcode district, with the survey, result and fixed price all in writing.

Free survey in Hamilton

Covering Hamilton and the ML3 district. 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 for Hamilton properties

If your property is in Hamilton or the ML3 district or nearby Motherwell, Wishaw and East Kilbride, it is within our Lanarkshire coverage. Hamilton is one of the main towns we cover in Lanarkshire.

If a wall in Hamilton is not suitable, for example because of an undiagnosed damp patch or a very exposed gable, you are told so in writing with the reason. Most Hamilton 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.

Before any material is chosen, exposure is checked. Parts of Lanarkshire 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 Hamilton no building warrant is needed for insulation within a wall, but the work must meet the building standards.

Funding in Scotland

In Scotland, Home Energy Scotland is the route to the Home Energy Scotland Grant and Loan and Warmer Homes Scotland.

Sources: Home Energy Scotland; mygov.scot: grants and loans for energy saving improvements.

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 in Hamilton

  • Clean-cavity working
  • Trays, closers and stop ends as drawn
  • Coordination with your bricklayers
  • Batts or boards to the specified U-value

Guide prices for Hamilton

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.

How it works in Hamilton:

  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.

Cavity insulation for new builds and extensions in Hamilton: questions

How much does cavity insulation for new builds and extensions cost in Hamilton?

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

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

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 Hamilton?

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 my Hamilton home too exposed for cavity insulation?

Parts of Lanarkshire 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 Hamilton

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