What Is an Insurance-Backed Guarantee?
Written by James Walker · Last reviewed 15 August 2026
James Walker has 2 degrees in construction (BSc (Hons) Building Surveying · MSc Environmental Design of Buildings) and an extensive background in issue resolution, resolving over £4 billion of consumer issues.
An insurance-backed guarantee is a warranty underwritten by an insurance company rather than by the builder. If the builder ceases trading, the guarantee can still be honoured.
Why this distinction is the whole point
A guarantee from a builder is only worth the builder's continued existence.
Long guarantees are common in exactly the trades where companies fail most, damp proofing, roofing, windows, solar. A thirty-year guarantee from a company that dissolves in four is worth nothing, and homeowners routinely discover this at the moment they need it.
An insurance-backed guarantee moves that risk to an insurer.
What to ask
- Is the guarantee insurance-backed?
- Who is the underwriter?
- Will I receive a policy document, and when?
- What does it actually cover, and what is excluded?
Ask for the policy document, not a certificate from the builder. They are different things.
When to expect one
Most common in trades offering long warranties, and often a requirement of accreditation schemes. Where a long guarantee is being used as a selling point, this is the question that tests it.
How it works
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