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Aldershot · Hampshire

Cavity wall insulation in Aldershot

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. In Aldershot we follow the England rules on building notices and self-certification, and confirm the route on your quote.

Free survey in Aldershot

Covering Aldershot and the GU11 district. Tell us about the property and we will arrange a free survey and a fixed price.

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Cavity wall insulation for Aldershot properties

Aldershot sits in Hampshire, about 37 miles north-east of Southampton. We work across the GU11 district, including nearby Farnborough, Fleet and Yateley.

A suitable wall in Aldershot is usually filled in a single day from outside, with drill holes made good to match the pointing. Where an Aldershot property has an extension or a conservatory, we check how the old and new walls meet, because that junction is often missed.

Before any material is chosen, exposure is checked. Hampshire 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.

On the rules side, in Aldershot 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 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 Aldershot

  • Cavity barriers at party walls
  • Suitability survey with photos and a written result
  • Drilling, filling and colour-matched making good
  • Building regulations route for your nation, confirmed in writing

Guide prices for Aldershot

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.

From enquiry to finish in Aldershot:

  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 in Aldershot: questions

Do you cold-call in Aldershot?

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 wall insulation cost in Aldershot?

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

Is there VAT on cavity wall insulation in Aldershot?

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

How soon can you visit in Aldershot?

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.

Nearby towns

Book a free survey in Aldershot

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