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AnswerHow much does underfloor insulation cost?
Underfloor insulation typically costs £1,500–£5,000 in the UK and saves around £65–£180 a year on heating, with payback of about several years.
Insulation is the cheapest way to cut bills and is the smart first step before a heat pump — a warmer, tighter home needs a smaller, cheaper system.
| Cost | £1,500–£5,000 (for suspended timber floors) |
|---|---|
| Annual saving | £65–£180 |
| Payback | several years |
2026 figures, based on Energy Saving Trust, Ofgem & gov.uk data · always confirm with a professional survey.