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Portsmouth · Hampshire

Commercial cavity wall insulation in Portsmouth

From the first survey to the paperwork, commercial cavity wall insulation in Portsmouth is handled by one team and one contract. Commercial cavity wall insulation fills cavity walls in offices, schools, surgeries, churches and light industrial buildings.

Free survey in Portsmouth

Covering Portsmouth and the PO1 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.

Commercial cavity wall insulation for Portsmouth properties

Portsmouth is among the towns we cover in Hampshire, alongside Gosport, Fareham and Havant. It is around 16 miles south-east of Southampton.

Per-address photo records for Portsmouth properties make compliance files and EPC updates straightforward. Work on Portsmouth rented homes and blocks is booked around tenants and residents, with access arranged through your agent if you prefer.

Wind-driven rain is the first thing the surveyor weighs up. 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 Portsmouth 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 is different on commercial jobs

Access is planned around opening hours, often with towers or MEWPs. Material choice takes account of building use and fire requirements, so non-combustible mineral wool is often specified. Work is usually standard-rated for VAT unless the building qualifies for a relief, which we confirm on the quote.

What is included in Portsmouth

  • Out-of-hours working where needed
  • O&M information
  • Access and method statement
  • Survey and specification

Guide prices for Portsmouth

Commercial cavity wall insulation guide prices
Commercial cavity wall insulation guide pricesGuide price
Commercial cavity fill, per m² (+VAT)£22–£36
Access towers or MEWP, per day (+VAT)£195–£495

Commercial prices are shown plus VAT where it applies. 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 Portsmouth:

  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.

Commercial cavity wall insulation in Portsmouth: questions

Is there VAT on commercial cavity wall insulation in Portsmouth?

Work on commercial buildings is normally standard-rated for VAT, unless the building qualifies for a relief, which we confirm on the quote.

Are there grants for insulation in Portsmouth?

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.

Which building regulations route applies in Portsmouth?

Portsmouth is in England, so filling a cavity is notifiable building work and needs a building notice or competent-person self-certification. We confirm the route in writing on your quote.

Do you cover Portsmouth?

Yes. Portsmouth and the PO1 postcode district are within our Hampshire coverage, along with nearby Gosport and Fareham.

Nearby towns

Book a free survey in Portsmouth

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