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Solihull · West Midlands

Cavity insulation for new builds and extensions in Solihull

Cavity insulation for new builds and extensions in Solihull starts with a free survey of the property, then a written result and a fixed price before any work is booked. 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 Solihull

Covering Solihull and the B91 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 Solihull properties

Our West Midlands coverage takes in Solihull (B91) and nearby Birmingham, Smethwick and Sutton Coldfield. It is roughly 7 miles south-east of Birmingham.

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

Wind-driven rain is the first thing the surveyor weighs up. The West Midlands has a mix of moderate and more exposed sites. Hilltop, coastal and west-facing walls take the brunt of wind-driven rain, so the survey records exposure for each elevation before a material is chosen.

As for paperwork, in Solihull filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.

Funding in England

In England, ECO4 runs to 31 December 2026 and Warm Homes: Local Grant supports low-income households through councils.

Sources: GOV.UK: extending the ECO4 end date, government response; GOV.UK: Warm Homes Plan.

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 Solihull

  • Photo record for building control
  • Trays, closers and stop ends as drawn
  • Clean-cavity working
  • Coordination with your bricklayers

Guide prices for Solihull

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.

What happens next for a Solihull property:

  1. Send your details

    A minute online, or call the free number.

  2. We check the walls

    Construction, cavity width, debris, damp and wind-driven rain exposure.

  3. You decide

    Plain-English result and a fixed price, with no pressure to book.

  4. Job done properly

    Holes made good, paperwork handed over, guarantee details confirmed.

Last reviewed 19 October 2026.

Cavity insulation for new builds and extensions in Solihull: questions

Do you cover Solihull?

Yes. Solihull and the B91 postcode district are within our West Midlands coverage, along with nearby Birmingham and Smethwick.

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

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 Solihull?

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 Solihull?

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

Nearby towns

Book a free survey in Solihull

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