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Yeovil · Somerset

Cavity wall insulation in Yeovil

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. We cover Yeovil and the wider BA20 postcode district, with the survey, result and fixed price all in writing.

Free survey in Yeovil

Covering Yeovil and the BA20 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 Yeovil properties

Yeovil sits in Somerset, around 21 miles east of Taunton. We work across the BA20 district, including nearby Bridgwater, Taunton and Frome.

Where a Yeovil property has an extension or a conservatory, we check how the old and new walls meet, because that junction is often missed. Most Yeovil 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.

Every elevation is judged on its own exposure. Somerset 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.

For regulations, in Yeovil 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.

Is my wall suitable for cavity wall insulation?

Most homes built from the 1920s onwards have cavity walls, but having a cavity is not the same as being suitable. The Energy Saving Trust's rule of thumb is a cavity of at least 50mm, clear of rubble, behind masonry in good condition, on a wall that is not exposed to severe driving rain or flood risk.

What is included in Yeovil

  • Cavity barriers at party walls
  • Drilling, filling and colour-matched making good
  • Building regulations route for your nation, confirmed in writing
  • Guarantee and installer named on your quote

Guide prices for Yeovil

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.

What happens next for a Yeovil 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 wall insulation in Yeovil: questions

Do you work on rented homes in Yeovil?

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

Are there grants for insulation in Yeovil?

In England, ECO4 runs to 31 December 2026 and Warm Homes: Local Grant supports low-income households through councils. We cannot promise funding, but we will point you to the right official route.

Is the survey free in Yeovil?

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

How much does cavity wall insulation cost in Yeovil?

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

Nearby towns

Book a free survey in Yeovil

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