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Greenock · Renfrewshire and Inverclyde

Cavity wall insulation in Greenock

Looking for cavity wall insulation in Greenock? We survey first, name the installer, their scheme registrations and the guarantee on the quote, and only then book the work. Cavity wall insulation fills the gap between the two leaves of a brick or block wall with a certified insulating material, blown in through small holes drilled from outside.

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 wall insulation 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 around 15 miles north-west of Paisley.

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. Most Greenock 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 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.

On compliance, 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 happens on the day?

Holes of around 22mm are drilled in the mortar joints in a set pattern, roughly a metre apart. The insulation is blown in from the bottom up until each section is full, then every hole is filled with colour-matched mortar. Air bricks and flues are protected, and a cavity barrier is fitted where your wall joins a neighbour's.

What is included in Greenock

  • Certified mineral wool or bonded bead system
  • Guarantee and installer named on your quote
  • Cavity barriers at party walls
  • Drilling, filling and colour-matched making good

Guide prices for Greenock

Cavity wall insulation guide prices
Cavity wall insulation guide pricesGuide price
Detached house£2,295–£3,795
Semi-detached house£1,495–£2,495
End-terrace house£1,295–£2,195
Detached bungalow£1,295–£2,195
Semi-detached bungalow£895–£1,595
Mid-terrace house£795–£1,395

No VAT is charged on installing insulation in homes until 31 March 2027 (then 5%). 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 Greenock:

  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 wall insulation in Greenock: questions

Which building regulations route applies in Greenock?

Greenock 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.

How much does cavity wall insulation cost in Greenock?

Our guide ranges for cavity wall insulation 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 cover Greenock?

Yes. Greenock and the PA15 postcode district are within our Renfrewshire and Inverclyde coverage, along with nearby Paisley and Renfrew.

Is the survey free in Greenock?

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

Nearby towns

Book a free survey in Greenock

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