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Swanley · Kent

Cavity wall insulation removal in Swanley

Swanley homeowners, buyers, landlords and agents can book cavity wall insulation removal with the price agreed first. Cavity wall insulation removal takes failed fill out of the cavity, usually by lifting bricks at low level and extracting the material with an industrial vacuum and rods, then cleaning the cavity and rebuilding the brickwork.

Book a removal survey in Swanley

Covering Swanley and the BR8 district. Tell us about the property. We confirm the price before you book.

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Cavity wall insulation removal for Swanley properties

If your property is in Swanley or the BR8 district or nearby Dartford, Sevenoaks and Gravesend, it is within our Kent coverage. It is about 17 miles north-west of Maidstone.

Damp in an insulated Swanley home is not always the insulation's fault, so the diagnosis comes before any extraction. Defects such as failed pointing, leaking gutters and bridged damp-proof courses are listed and priced separately for Swanley properties, so you can choose who fixes them.

Local weather affects which walls can be filled. 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.

How extraction works

Bricks are carefully removed in a line near the base and at intervals higher up where needed. The fill is broken up and drawn out with an extraction vacuum, the cavity is cleared and checked with a camera, and the bricks are rebuilt in matching mortar. Extracted material is bagged and disposed of properly.

What is included in Swanley

  • Brick removal and reinstatement
  • Waste disposal
  • Option to refill with a suitable system
  • Full extraction and cavity clean

Guide prices for Swanley

Cavity wall insulation removal guide prices
Cavity wall insulation removal guide pricesGuide price
Detached house£2,595–£4,195
Semi-detached house£1,695–£2,795
End-terrace house£1,395–£2,395
Detached bungalow£1,395–£2,395
Semi-detached bungalow£1,195–£1,695
Mid-terrace house£1,195–£1,595

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. 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.

Cavity wall insulation removal in Swanley: questions

Do you cover Swanley?

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

Do you work on rented homes in Swanley?

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

How much does cavity wall insulation removal cost in Swanley?

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

Do you cold-call in Swanley?

No. We only come out when you have asked us to. If someone cold-calls offering free insulation, check before you agree to anything.

Nearby towns

Book a removal survey in Swanley

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