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Dunoon · Argyll and Bute

Cavity insulation for new builds and extensions in Dunoon

For homes and buildings in Dunoon, cavity insulation for new builds and extensions is arranged survey-first: we check the property, tell you plainly what we found, and price it. 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.

Free survey in Dunoon

Covering Dunoon and the PA23 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 Dunoon properties

Our Argyll and Bute coverage takes in Dunoon (PA23) and nearby Helensburgh and Oban. It is about 8 miles south-west of Helensburgh.

If a wall in Dunoon 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 Dunoon 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.

Local weather affects which walls can be filled. Parts of Argyll and Bute 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.

On the rules side, in Dunoon 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.

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 in Dunoon

  • Trays, closers and stop ends as drawn
  • Clean-cavity working
  • Photo record for building control
  • Batts or boards to the specified U-value

Guide prices for Dunoon

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 Dunoon:

  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 Dunoon: questions

Which building regulations route applies in Dunoon?

Dunoon is in Scotland, so no building warrant is needed for insulation within a wall, but the work must meet the building standards. We confirm the route in writing on your quote.

Are there grants for insulation in Dunoon?

In Scotland, Home Energy Scotland is the route to the Home Energy Scotland Grant and Loan and Warmer Homes Scotland. We cannot promise funding, but we will point you to the right official route.

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

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.

Is the survey free in Dunoon?

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

Nearby towns

Book a free survey in Dunoon

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