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Exeter · Devon

Existing insulation and guarantee check in Exeter

An existing insulation check tells you whether a cavity is filled, what with, whether it looks dry and intact, and how to trace any guarantee. We cover Exeter and the wider EX4 postcode district, and the price is confirmed before anyone visits.

Book an insulation check in Exeter

Covering Exeter and the EX4 district. Tell us about the property. We confirm the price before you book.

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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.

Existing insulation and guarantee check for Exeter properties

If your property is in Exeter or the EX4 district or nearby Exmouth, Tiverton and Newton Abbot, it is within our Devon coverage. Exeter is one of the main towns we cover in Devon.

Every inspection point in Exeter is photographed and logged, so you have a record to show a buyer, lender or contractor. Buyers and sellers in Exeter often book this check when a survey report or EPC raises questions about the walls.

Wind-driven rain is the first thing the surveyor weighs up. Parts of Devon 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, if cavity wall insulation follows in Exeter, filling a cavity is notifiable building work and needs a building notice or competent-person self-certification.

Rules in England

Filling a cavity is notifiable building work and needs a building notice or competent-person self-certification if insulation work follows.

Sources: Planning Portal: cavity wall insulation and building regulations; CIGA: CWISC competent person scheme.

How to tell if a house already has cavity insulation

Look for a regular pattern of small patched holes in the mortar joints, often about a metre apart. Check the EPC, which may say 'filled cavity'. Ask the seller for a guarantee. The reliable answer is a borescope check, because patched holes can be from a fill that was later removed and EPCs are sometimes wrong.

What is included in Exeter

  • Guidance on tracing a guarantee
  • Borescope checks
  • Short written report
  • Visual check of walls and patched holes

Guide prices for Exeter

Existing insulation and guarantee check guide prices
Existing insulation and guarantee check guide pricesGuide price
Existing insulation and guarantee check£145–£245

This work is not insulation, so it is normally standard-rated for VAT. Guide prices include 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.

The steps for an insulation and guarantee check in Exeter:

  1. Tell us what is happening

    Postcode, property type and what you have noticed.

  2. Price agreed first

    We confirm the price before anyone visits.

  3. Visit and checks

    Photos and readings at the areas that matter.

  4. Findings in writing

    What we found and the options, each priced separately.

Last reviewed 19 October 2026.

Existing insulation and guarantee check in Exeter: questions

How much does an insulation and guarantee check cost in Exeter?

Guide prices are shown on this page, and the price for your Exeter property is confirmed before you book.

Is there VAT on an insulation and guarantee check in Exeter?

Existing insulation and guarantee check is not insulation, so it is normally charged at the standard rate of VAT. The VAT treatment is confirmed on your quote.

Do you work on rented homes in Exeter?

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

Will you tell me if I do not need any work?

Yes. If the findings show nothing needs doing, or a cheaper fix such as clearing a gutter will do, we say so.

Nearby towns

Book an insulation check in Exeter

Priced before you book. Findings in writing. No cold calls.