External Wall Insulation - Stop Throwing Money Through Your Walls
Solid walls lose twice as much heat as cavity walls. If your home was built before 1920, external wall insulation could cut your heating bills by 35%.
What You'll Save
Typical 3-bedroom semi-detached home:
- Annual saving: £400-£500
- Payback period: 12-18 years
- 25-year total saving: £10,000-£14,000
- Plus: Warmer home, no cold walls, reduced condensation
Average detached house:
- Annual saving: £600-£800
- Payback period: 15-20 years
- 25-year total saving: £15,000-£20,000
Add smart controls (Nest, Hive): Extra £75-£150 saved per year
Financial Help Available
ECO4 Scheme: If you’re on benefits or low income, you could get external wall insulation for FREE or heavily subsidised (until March 2026)
Local Authority Grants: Some councils offer additional funding – we’ll check eligibility for you
0% Finance: Spread the cost over 60-120 months with approved finance partners
Property Value Boost
External wall insulation improves your EPC rating significantly:
- Band E to C: Adds £10,000-£18,000 to property value
- Band D to B: Adds £15,000-£25,000 to property value
Rental properties: Essential for meeting 2025 EPC Band C requirement
Beyond Energy Savings
Your home will be:
- Warmer in winter (eliminates cold walls)
- Cooler in summer (natural temperature regulation)
- Quieter (insulation reduces external noise by 50-70%)
- Dryer (prevents condensation and damp issues)
- More attractive (choose from 100+ colours and finishes)
Protection benefits:
- Shields brickwork from weather damage
- Extends building lifespan by 30+ years
- Eliminates pointing and repointing costs
- Reduces maintenance expenses
Is Your Home Suitable?
Ideal for:
- ✓ Solid brick walls (pre-1920s homes)
- ✓ Properties with no cavity wall
- ✓ Homes with damp or condensation issues
- ✓ Listed buildings (with consent)
- ✓ Any property losing significant heat
Not suitable for:
- ✗ Homes with very shallow roof overhangs
- ✗ Properties where planning permission denied
- ✗ Buildings with structural issues (fix first)
Unsure? Our free thermal survey will tell you if it’s right for your home
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