Open-Cell Spray Foam Removal
Open-cell spray foam is a lower-density, softer foam often used in UK lofts. While generally easier and cheaper to remove than closed-cell, it still causes the same mortgage and ventilation issues — and needs taking out by a qualified specialist.
How to identify open-cell foam
- Soft and spongy when pressed
- Off-white or pale yellow colour
- Lower density (~8 kg/m³)
- Often applied 100–250mm thick
- Slightly absorbent — feels "fluffy"
Open-cell removal cost UK
£40–£70 per m² is the typical UK 2026 range. A standard semi-detached works out around £2,200–£3,800.
The removal process
Open-cell foam is hand-stripped using flat scrapers. Because the foam is softer it lifts more easily from rafters, with less risk to the timber. The whole job for a typical UK home takes 1–3 days.
Why mortgage lenders still refuse open-cell
Even though open-cell is more breathable than closed-cell, UK lenders apply a blanket ban because surveyors cannot inspect the timber underneath. Removal is required to restore lending.
Frequently Asked Questions
Yes — open-cell is softer and lower density, so it strips more easily and costs less to remove.
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