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How to Apply for Free Insulation

Step-by-step guide to applying for free insulation in the UK. ECO4 and GBIS schemes cover loft, cavity wall, and solid wall insulation at zero cost.

Free Insulation: Two Schemes, One Application

The UK government funds free insulation through two main schemes: ECO4 (for households on benefits) and GBIS (for anyone in council tax bands A-D). Here's exactly how to apply for both.

Step 1: Check Your Eligibility

Before applying, confirm you qualify. Use our free eligibility checker — it tests both schemes in 60 seconds.

For ECO4: You need qualifying benefits + EPC rating of D or below.

For GBIS: You need council tax bands A-D (England) or A-E (Scotland/Wales). No benefits required.

Step 2: Submit Your Details

Once you confirm eligibility, you'll provide:

  • Your name and contact details
  • Your address and postcode
  • Which benefits you receive (if applying via ECO4)
  • Your property type and current insulation status

Step 3: Free Home Survey

A qualified energy assessor visits your home (free of charge) to:

  • Check your current insulation levels
  • Identify which measures your home needs
  • Confirm your EPC rating
  • Recommend the best improvements

This typically takes 30-45 minutes.

Step 4: Installation

Once approved, a TrustMark-registered installer carries out the work. Typical timelines:

  • Loft insulation: 2-4 hours
  • Cavity wall insulation: 2-3 hours
  • Solid wall insulation (external): 1-2 weeks
  • Solid wall insulation (internal): 3-5 days per room

What Insulation Can I Get Free?

  • Loft insulation — most common, saves £355-590/year
  • Cavity wall insulation — saves £195-595/year
  • Solid wall insulation — saves £430-640/year (most expensive measure, huge savings)
  • Underfloor insulation — saves £100-200/year
  • Room-in-roof insulation — for converted lofts
  • Flat roof insulation

How Long Does the Process Take?

From initial enquiry to completed installation is typically 4-8 weeks. The main variable is installer availability in your area.

Is There Really No Cost?

Through ECO4 and GBIS, the cost is fully covered by your energy supplier. You pay nothing — no deposit, no hidden fees, no catch. The energy companies are legally required to fund these improvements under government obligation.

Apply Now

The ECO4 scheme runs until December 2026 and GBIS until March 2026, but funding is limited. Check your eligibility and start your application today.

Check Your Eligibility

Find out which grants you qualify for in 60 seconds.

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FAQ

Common Questions

From application to installation is typically 4-8 weeks. The home survey is usually arranged within 1-2 weeks of applying.
Yes, 100% free through ECO4 and GBIS. Energy companies are legally required to fund these improvements. No deposit, no hidden costs.
The energy assessor recommends the best measures for your home. You can discuss options, but the final recommendation depends on your property's needs and what the scheme covers.
Not necessarily. GBIS provides free insulation for homes in council tax bands A-D with no benefits requirement. ECO4 requires qualifying benefits but covers more measures.