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Greenock · Renfrewshire and Inverclyde

Cavity insulation for new builds and extensions in Greenock

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. In Greenock we follow the Scotland rules on building standards, and confirm the route on your quote.

Free survey in Greenock

Covering Greenock and the PA15 district. 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 for Greenock properties

If your property is in Greenock or the PA15 district or nearby Paisley, Renfrew and Newton Mearns, it is within our Renfrewshire and Inverclyde coverage. It is about 15 miles north-west of Paisley.

If a wall in Greenock 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. For semi-detached and terraced homes in Greenock, cavity barriers are fitted where your wall meets your neighbour's so the fill stays on your side.

Local weather affects which walls can be filled. Parts of Renfrewshire and Inverclyde 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 regulations, in Greenock 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 Greenock

  • Coordination with your bricklayers
  • Photo record for building control
  • Clean-cavity working
  • Batts or boards to the specified U-value

Guide prices for Greenock

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 Greenock:

  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 Greenock: questions

How soon can you visit in Greenock?

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

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

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

Do you cold-call in Greenock?

No. We only come out when you have asked us to. If someone cold-calls offering free insulation, check before you agree to anything.

Nearby towns

Book a free survey in Greenock

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