Written Question·Department for Energy Security and Net Zero·UIN 84406

Insulation: Housing

Tabled: 22 October 2025
Answered: 31 October 2025

Question

Dr Ellie Chowns

Green PartyNorth Herefordshire

To ask the Secretary of State for Energy Security and Net Zero, whether consumers will be exempt from paying for remediation costs to fix faulty insulation installations under the (a) ECO4 and (b) GBIS schemes if the costs exceed £20,000.

Answer

Katie White
The remediation costs sit with the original installer. We expect remediation for solid wall insulation installed under ECO4 or GBIS to cost between £250 and £6,000 for IWI and £5,000 and £18,000 for EWI. This should be covered by the guarantee should the ...

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