Free audit available to those who have had external wall insulation under ECO4 or GBIS - Check Eligibility
Updated 29th April 2026
Free Find & Fix audit offer to homeowners
Introduction
How will I know that I will receive an offer of an audit?
When will I receive my audit?
What do I need to do and when?
What should I expect from TrustMark?
Who will contact me?
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