How much does spray foam removal cost in the UK?
Spray foam removal costs £1,500 to £6,000 in the UK, typically around £2,800 for the job. Prices reviewed June 2026.
Removing spray foam insulation from a loft is priced by the roof size and how hard the foam is to strip. Most removals are triggered by a house sale or remortgage, because lenders often refuse homes that still have it.
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Spray foam removal cost breakdown
Typical spray foam removal costs, by option:
| Roof / foam type | Typical UK cost |
|---|---|
| Small roof or open-cell foam | £1,500 to £2,500 |
| Standard house | £2,500 to £4,000 |
| Large roof or closed-cell foam | £4,000 to £6,000 |
| + New breathable membrane and re-felting | add £500 to £1,500 |
| + Repair damaged battens or rafters | add £300 to £1,500 |
What's included in the price?
Typical spray foam removal prices include:
- Manual removal of the foam from rafters and felt
- Bagging and disposal of the waste
- Inspection of the roof timbers underneath
- Basic clean-down of the loft
What changes the price?
The things that move spray foam removal prices most:
Roof size and pitch
Open-cell versus closed-cell foam, which is harder to remove
How much the membrane and timbers need repairing afterwards
Whether new insulation is fitted once the foam is out
Does where you live change the cost?
In London, spray foam removal typically costs around £3,600 for the job, about 30% above the UK average of £2,800. In the North, Scotland and Wales the guide figure is nearer £2,600.
| Region | From | Typical | Up to |
|---|---|---|---|
| Midlands / East (UK average) | £1,500 | £2,800 | £6,000 |
| London | £2,000 | £3,600 | £7,800 |
| South East / South West | £1,700 | £3,200 | £6,900 |
| North / Scotland / Wales | £1,400 | £2,600 | £5,500 |
Guide prices for the job, scaled with the same regional multipliers as the calculator. Not quotes.
London and the South East run above the national figures, mainly on labour.
Common questions
Spray foam removal costs roughly £1,500 to £6,000 in the UK, typically around £2,800. A small roof or open-cell foam is £1,500 to £2,500, a standard house £2,500 to £4,000, and a large roof or stubborn closed-cell foam £4,000 to £6,000. A new breathable membrane and re-felting afterwards adds £500 to £1,500, and repairing any damaged timbers more again.
This is the reason most people remove it. Many mortgage lenders and their surveyors now refuse, down-value or require the removal of spray foam in the roof, because it can hide defects and trap moisture that rots the timbers. Removing the foam and getting a certificate or a clear survey usually restores the home's mortgageability, which is why removals are so often driven by a sale or remortgage falling through.
Yes, but it is slow, manual work: the foam is cut and scraped off the rafters and any felt by hand, then bagged and taken away, which is why it costs £1,500 to £6,000. Closed-cell foam bonds harder to the timber than open-cell and takes longer, costing more. The roof membrane and any battens the foam has damaged usually need attention once it is off.
It is not banned, but it has become a serious liability. It was widely sold as an effective loft and roof insulation, sometimes through energy schemes, but poorly installed foam can cause condensation and rot, and it obscures the roof structure from surveyors. The resulting lending and resale problems, rather than any ban, are why so many homeowners now pay to have it taken out.
Once the foam is off, the roof usually needs a new breathable membrane and re-felting (£500 to £1,500), and any battens or rafters the foam has rotted or damaged repaired (£300 to £1,500). After that you will want proper, safe loft insulation to replace what was lost. Budget for these steps on top of the removal itself, and get a quote that spells out which are included.
Open-cell foam is softer, spongier and usually applied thicker; closed-cell is denser, harder and rigid. Closed-cell is more troublesome for both moisture and removal, and costs more to strip. A removal specialist will identify which you have on a survey, along with how well the roof underneath has coped, which is what the removal quote is based on.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.