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Penarth · South Glamorgan

Cavity wall insulation for landlords in Penarth

For landlords, filling an empty cavity is usually one of the lowest-cost ways to improve an EPC rating. In Penarth we follow the Wales rules on notification and self-certification, and confirm the route on your quote.

Free survey in Penarth

Covering Penarth and the CF64 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 landlords for Penarth properties

Penarth sits in South Glamorgan, around 3 miles south of Cardiff. We work across the CF64 district, including nearby Cardiff and Barry.

For commercial buildings in Penarth, the survey also considers building use and fire requirements before a material is specified. Work on Penarth rented homes and blocks is booked around tenants and residents, with access arranged through your agent if you prefer.

Exposure matters for every cavity wall. Parts of South Glamorgan 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 Penarth filling a cavity is notifiable work under the Building Regulations as they apply in Wales, usually self-certified through a competent person scheme.

Funding in Wales

In Wales, Warm Homes Nest offers free improvements to eligible low-income households, and ECO4 runs to 31 December 2026.

Sources: Welsh Government: warmer and more energy efficient homes (July 2026); GOV.UK: extending the ECO4 end date, government response.

How we work with portfolios

One contact, one schedule. We survey in batches, return a simple sheet per address, and book installs around your tenants. Access arrangements and tenant notices are handled with your agent if you prefer.

What is included in Penarth

  • Fixed prices per address
  • Photo records for your files
  • Batch surveys
  • Per-property result sheet

Guide prices for Penarth

Cavity wall insulation for landlords guide prices
Cavity wall insulation for landlords 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.

From enquiry to finish in Penarth:

  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 wall insulation for landlords in Penarth: questions

How soon can you visit in Penarth?

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.

Are there grants for insulation in Penarth?

In Wales, Warm Homes Nest offers free improvements to eligible low-income households, and ECO4 runs to 31 December 2026. We cannot promise funding, but we will point you to the right official route.

Do you cold-call in Penarth?

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

Is there VAT on cavity wall insulation for landlords in Penarth?

Installing insulation in a home is currently zero-rated for VAT until 31 March 2027, then 5%. Commercial buildings are standard-rated.

Nearby towns

Book a free survey in Penarth

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