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Swanley · Kent

Existing insulation and guarantee check in Swanley

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 Swanley and the wider BR8 postcode district, and the price is confirmed before anyone visits.

Book an insulation check in Swanley

Covering Swanley and the BR8 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 Swanley properties

Swanley is among the towns we cover in Kent, alongside Dartford, Sevenoaks and Gravesend. It is around 17 miles north-west of Maidstone.

Buyers and sellers in Swanley often book this check when a survey report or EPC raises questions about the walls. A survey in Swanley gives you facts before anyone drills: what the wall is, what is in the cavity and whether it is sound.

Every elevation is judged on its own exposure. Much of Kent 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.

As for paperwork, if cavity wall insulation follows in Swanley, 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.

Tracing a guarantee

Many cavity fills carry a 25-year guarantee from the Cavity Insulation Guarantee Agency (CIGA). CIGA can confirm whether a property is covered and can issue a duplicate guarantee for a fee; at the time of writing that fee is £60 including VAT, and proof of ownership is required.

What is included in Swanley

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

Guide prices for Swanley

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 Swanley:

  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 Swanley: questions

What will I get from an insulation and guarantee check in Swanley?

A visit at an agreed price, photos of what we find, and a written summary in plain English. Any follow-on work is priced separately so you can choose who does it.

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

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.

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

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

Do you cover Swanley?

Yes. Swanley and the BR8 postcode district are within our Kent coverage, along with nearby Dartford and Sevenoaks.

Nearby towns

Book an insulation check in Swanley

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