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Cavity Wall Insulation Guarantee (CIGA)

A CIGA (Cavity Insulation Guarantee Agency) guarantee is a 25-year independent guarantee covering cavity wall insulation installations. It provides assurance that the insulation was installed by a registered installer using approved materials and methods. CIGA guarantees are transferable between property owners.

CIGA scheme rules, PAS 2030 (installing energy efficiency measures), BBA/KIWA product approvalsValid: 25 years

What it covers

Property details and cavity type
Insulation material and BBA certificate
Pre-installation survey results
Installation date and installer details
25-year guarantee terms
Transferable to new owners

Who needs a CIGA Guarantee?

Homeowners

Landlords

Property buyers (for conveyancing)

Energy grant scheme participants

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Frequently asked questions about CIGA Guarantee

What does a CIGA guarantee cover?

A CIGA guarantee covers defects in the cavity wall insulation installation for 25 years. If the insulation causes problems (damp penetration, settling), CIGA will arrange remedial work at no cost. The guarantee transfers automatically to new owners.

Is a CIGA guarantee needed for selling a house?

Conveyancing solicitors routinely request a CIGA guarantee as part of the property search. If cavity wall insulation has been installed without a CIGA guarantee, it can complicate a sale or require an indemnity policy.

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