Loft Insulation Cost Calculator 2025
Calculate the cost to insulate your loft. Save up to 25% on heating bills with government-funded installation available.
Calculate Your Loft Insulation Cost
Typical house: 40-60m²
You may qualify for FREE installation!
With an EPC rating of D, you could get loft insulation installed at no cost through ECO4 or GBIS if you receive benefits or earn under £36,000/year.
Payback period: 1.9 years (or instant with government grants)
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Get Free Quote & Check EligibilityLoft Insulation Cost Breakdown 2025
Average Costs by Loft Size
Small Loft (20-40m²)
Typical 2-bed terrace
£300 - £450
Medium Loft (40-60m²)
Typical 3-bed semi
£450 - £650
Large Loft (60-100m²)
Typical 4-bed detached
£650 - £1,200
Cost Factors
- Loft size: £7-12 per m² for mineral wool
- Insulation depth: 270mm standard, 300mm+ premium
- Accessibility: Easy-access lofts cost less
- Boarding: Add £200-£500 for loft boarding
Government Grants for Loft Insulation
ECO4 Scheme
100% free loft insulation for eligible homeowners
- ✓Receive benefits OR household income under £36,000
- ✓EPC rating D-G
- ✓Own your home or private tenant
Great British Insulation Scheme
Dedicated funding for insulation improvements
- ✓Household income under £36,000
- ✓Council Tax bands A-D (England)
- ✓EPC rating D-G
Benefits of Loft Insulation
💰 Save £200-300/Year
Reduce heating bills by up to 25% annually
🏠 Warmer Home
Up to 25% less heat loss through your roof
⚡ Quick Install
Typically completed in 2-4 hours
🌍 Eco-Friendly
Reduce CO2 emissions by 730kg/year
📈 Add Value
Improve EPC rating and property value
🛡️ 40+ Year Lifespan
Long-lasting insulation with minimal maintenance
Get FREE Loft Insulation Quotes Today
Check grant eligibility • Compare installers • Save on energy bills
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