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Lanarkshire · Scotland

Cavity insulation for new builds and extensions in Lanarkshire

For homes, landlords and businesses in Lanarkshire, cavity insulation for new builds and extensions starts with a free survey and a plain-English result. 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 Lanarkshire

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.

Cavity insulation for new builds and extensions across Lanarkshire

We cover 9 towns in Lanarkshire, including East Kilbride, Hamilton, Cumbernauld, Coatbridge, Airdrie and more.

Local weather affects which walls can be filled. 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.

For semi-detached and terraced homes in Lanarkshire, cavity barriers are fitted where your wall meets your neighbour's so the fill stays on your side. Where a Lanarkshire property has an extension or a conservatory, we check how the old and new walls meet, because that junction is often missed.

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.

What we work from

Your architect's or designer's specification and the energy calculation for the job. We match the product, thickness and fixing to that spec, keep cavities clean as the walls rise, and fit cavity trays, closers and stop ends where shown so the building control inspection goes smoothly.

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 Lanarkshire

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.

From enquiry to finish in Lanarkshire:

  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 insulation for new builds and extensions in Lanarkshire: questions

Do you cover all of Lanarkshire?

Yes. We cover 9 towns across Lanarkshire, including East Kilbride, Hamilton, Cumbernauld and Coatbridge, 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 Lanarkshire?

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.

Do you cold-call in Lanarkshire?

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 cavity insulation for new builds and extensions cost in Lanarkshire?

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

Cavity insulation for new builds and extensions in nearby areas

Book a free survey in Lanarkshire

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