Home › Insulation › How much does loft insulation cost
AnswerHow much does loft insulation cost?
Loft insulation typically costs £300–£600 in the UK and saves around £150–£350 a year on heating, with payback of about 1–3 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 | £300–£600 (top up to 270mm) |
|---|---|
| Annual saving | £150–£350 |
| Payback | 1–3 years |
2026 figures, based on Energy Saving Trust, Ofgem & gov.uk data · always confirm with a professional survey.