How Much Does Cavity Wall Insulation Removal Cost?

Typical costs for cavity wall insulation removal by property type, plus the factors that affect the final price. We provide fixed quotes after survey — no hidden costs.

Typical Cavity Wall Removal Costs

Cavity wall insulation removal (extraction) costs vary depending on property size, insulation type and access. The table below shows typical ranges for North East England — actual prices depend on a survey of your specific property.

Property Type Typical Cost Range
Mid-terrace house£1,200 – £2,000
End-terrace house£1,500 – £2,500
Semi-detached house£1,500 – £3,000
Detached house£2,000 – £4,500
Bungalow£1,200 – £2,500
Large detached / unusual shape£3,500+

We provide fixed-price quotes after our survey. The quote you receive before work starts is the price you pay. No day-rate surprises.

What's Included in the Price?

Borescope Survey

Camera inspection of the cavity to confirm condition and plan the extraction.

Full Extraction

All insulation material removed from the cavity using industrial vacuum equipment.

Written Survey Report

Detailed report documenting cavity condition, insulation state and work carried out. Suitable for insurance claims.

Hole Resealing

Access holes are repointed or filled. Property left in a clean condition.

What Affects the Cost?

Property Size

The larger the property, the more external wall area and the more access holes, equipment time and disposal involved. A detached four-bedroom house costs significantly more than a mid-terrace.

Insulation Type

EPS (polystyrene) bead is the easiest to extract — it vacuums out cleanly. Mineral wool and blown fibre require more effort. Foam injections are the most complex and expensive to remove.

Height & Access

Two-storey properties require access holes at height. If scaffolding is needed (some properties have difficult access), this adds cost. We'll identify access requirements at the survey stage.

Can You Recover the Cost?

If your cavity wall insulation was installed under a government-funded scheme (ECO, CERT, CESP or similar), and has failed due to incorrect installation or unsuitable property assessment, you may be able to recover some or all of the removal cost through:

  • The original installer — if still trading and the work was guaranteed
  • CIGA (Cavity Insulation Guarantee Agency) — the industry guarantee body for CWI installations
  • Your home insurer — if the insulation failure has caused property damage
  • The energy company that funded the original installation

Our survey report is designed to be detailed enough to support any of these claims.

Important: Pursuing a compensation claim does not always mean the original installer covers the cost of removal. In many cases, homeowners pay for removal themselves and pursue compensation separately. We can advise on this during the survey.

More about our cavity wall extraction service →

Get a Fixed Quote for Cavity Wall Extraction

Contact us to arrange a survey. We'll inspect the cavity and provide a fixed price for extraction.