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Market Harborough · Northamptonshire

Existing insulation and guarantee check in Market Harborough

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. In Market Harborough the visit is priced up front, and any follow-on work is quoted separately so you can choose.

Book an insulation check in Market Harborough

Covering Market Harborough and the LE16 district. Tell us about the property. We confirm the price before you book.

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Existing insulation and guarantee check for Market Harborough properties

Our Northamptonshire coverage takes in Market Harborough (LE16) and nearby Corby, Kettering and Wellingborough. It is roughly 16 miles north of Northampton.

Where a Market Harborough wall shows cold patches or damp, the survey targets those areas first rather than sampling at random. Buyers and sellers in Market Harborough 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. Much of Northamptonshire sits in the more sheltered driving-rain zones of the UK, which widens the choice of fill. Exposed elevations, coastal sites and high ground still get checked wall by wall.

On the rules side, if cavity wall insulation follows in Market Harborough, 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 Market Harborough

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

Guide prices for Market Harborough

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.

From enquiry to finish in Market Harborough:

  1. Get in touch

    Online, by phone or WhatsApp.

  2. Your price

    Confirmed in writing before you book.

  3. The visit

    Carried out at an agreed time, with photos of what we find.

  4. Your report

    Plain English, with any follow-on work quoted separately.

Last reviewed 19 October 2026.

Existing insulation and guarantee check in Market Harborough: questions

How much does an insulation and guarantee check cost in Market Harborough?

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

Do you cover Market Harborough?

Yes. Market Harborough and the LE16 postcode district are within our Northamptonshire coverage, along with nearby Corby and Kettering.

How soon can you visit in Market Harborough?

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.

Is there VAT on an insulation and guarantee check in Market Harborough?

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.

Nearby towns

Book an insulation check in Market Harborough

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