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CQ Studio

Insurance by trade

Plumbers insurance: water damage, gas work and old buildings

A slow leak can do more damage than a dropped tool. Plumbers need to think about what happens after they leave.

By the Contractor Quote Studio editorial desk · 11 November 2026 · 2 min read

Plumber fitting a waste pipe under a sink
Photo: Unsplash

The short version

  • Escape of water is the claim to plan for.
  • In-scope gas work requires Gas Safe registration.
  • Asbestos can be behind old boilers and pipework.

A plumber's worst day often starts after the van has gone. A joint weeps behind a wall for a week, and the ceiling below comes down.

Gas work is regulated

Under the Gas Safety (Installation and Use) Regulations 1998, a gas engineering business doing in-scope gas work must be on the Gas Safe Register.1 Check your policy is written for gas if you do it. Doing work outside your registration can raise serious problems at claim time.

Your duty to customers

The Consumer Rights Act 2015 says services must be provided with reasonable care and skill. Citizens Advice notes that unnoticed faults can be raised for up to six years in England, Wales and Northern Ireland.3 Long tails are normal in this trade.

The cover to look at

  • Public liability with a limit that reflects flood damage in flats.
  • Products liability for what you supply and fit.
  • Employers' liability if you have staff.
  • Tools cover, including press tools and flue analysers.

Older buildings

Routine maintenance and drilling into walls are higher-risk activities for asbestos. If you are self-employed you have the same responsibilities as an employer and a worker.2 Ask for an asbestos survey on older commercial premises. Note that many liability policies exclude asbestos claims.

Sources

  1. Gas Safe Register scheme, Health and Safety Executive. Accessed 11 November 2026.
  2. Introduction to asbestos, Health and Safety Executive. Accessed 11 November 2026.
  3. Complain about a service, Citizens Advice. Accessed 11 November 2026.

General information only. This is not legal, insurance or financial advice. Your own policy wording decides what is covered.