How Much Does Home Insulation Cost?
Proper insulation is the most cost-effective way to reduce energy bills. The UK government's Warm Homes Plan offers grants for insulation upgrades, making 2026 an ideal time to act.
Typical UK Costs
Budget£500Basic specification
Average£2,500Mid-range finish
Premium£8,000High-end specification
Get Your Personalised Estimate
These are average UK costs. Get a more accurate estimate tailored to your specific project details and location.
Get a Personalised EstimateWhat Affects the Cost?
- Type (loft, cavity wall, solid wall, floor)
- Property size and construction type
- Current insulation level
- Access requirements
- Government grant eligibility
Frequently Asked Questions
What insulation gives the best return?
Loft insulation offers the best ROI at £300-£500 installed, saving £150-£250/year. Cavity wall insulation costs £500-£1,500 and saves £100-£300/year.
Am I eligible for free insulation?
The Warm Homes Plan and ECO4 scheme offer free or subsidised insulation for eligible households. Income-based criteria apply.