0800 088 6248
CavityWallInsulationUKCAVITYWALLINSULATIONUK.CO.UK
Cavity wall insulationCavity wall suitability surveyCavity wall insulation removalCavity insulation top-upDamp investigation after cavity insulationBonded polystyrene bead insulationBlown mineral wool insulationParty wall cavity insulationBorescope cavity inspectionCavity wall insulation for landlordsGrant and funding checkLoft insulation
Lerwick · Highlands and Islands

Cavity insulation for new builds and extensions in Lerwick

Looking for cavity insulation for new builds and extensions in Lerwick? We survey first, name the installer, their scheme registrations and the guarantee on the quote, and only then book the work. 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 Lerwick

Covering Lerwick and the ZE1 district. Tell us about the property and we will arrange a free survey and a fixed price.

Enter a UK postcode.
Choose a service.
Enter your name.
Enter a phone number with at least 10 digits.
Enter a valid email address.

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 Lerwick properties

Lerwick sits in the Highlands and Islands. We work across the ZE1 district.

Most Lerwick 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. Lerwick properties with rendered or painted walls get a closer look at the outer finish, because cracked render can let rain behind it.

Local weather affects which walls can be filled. Parts of the Highlands and Islands 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 Lerwick 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 Lerwick

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

Guide prices for Lerwick

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 Lerwick:

  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 Lerwick: questions

Do you work on rented homes in Lerwick?

Yes. Landlords and agents in Lerwick can book batch visits, and work is arranged around tenants.

Is my Lerwick home too exposed for cavity insulation?

Parts of the Highlands and Islands 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.

How soon can you visit in Lerwick?

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.

Do you cold-call in Lerwick?

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

Book a free survey in Lerwick

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