Check Plumber Insurance, Public Liability & Guarantees

By The FixDelivered Team · Updated 2026-07-22 · 5 min read

Hiring a plumber is often done under stress, especially during an emergency. However, taking a moment to verify their credentials, including their insurance, public liability coverage, and guarantees, is paramount. This due diligence protects you from potential financial headaches, substandard work, and uninsured damages.

The Importance of Plumber Insurance

What is Plumber Insurance?

A professional plumber should carry several types of insurance to protect both themselves and their clients.

Public Liability Insurance: This is arguably the most crucial for homeowners. It covers costs if the plumber accidentally causes damage to your property or injury to a third party (e.g., you or a visitor) while working. For instance, if a pipe bursts during their repair, causing water damage to your floor, their public liability insurance would typically cover the repair costs.
Professional Indemnity Insurance: While less common for general plumbing, this covers financial losses due to professional negligence or mistakes in advice given.
Employers' Liability Insurance: If the plumber employs other people, this is a legal requirement. It covers compensation if an employee is injured or becomes ill as a result of their work.

Why is Public Liability Insurance So Important?

Without adequate public liability insurance, you could be left footing the bill for any accidental damage caused by the plumber during their work. Imagine a scenario where a dropped tool smashes your sink, or a poorly tightened joint floods your kitchen. If the plumber isn't insured, recovering costs could be a lengthy and stressful process, potentially leading to expensive legal action. Always ask for proof of their public liability cover.

Typically, a professional plumber will have cover ranging from £2 million to £5 million, which is usually sufficient for most residential work.

Plumber Guarantees: What to Expect

A reputable plumber stands by their work. A guarantee provides peace of mind that if something goes wrong with the repair or installation within a specified period due to faulty workmanship, they will return to fix it at no additional cost.

Workmanship Guarantees

Most plumbers will offer a guarantee on their workmanship. This typically covers the labour involved in the repair or installation. As a rough guide, you should expect a workmanship guarantee of at least 12 months. For larger installations, such as a new boiler, this might be longer, often tied to the manufacturer's warranty.

Parts and Materials

The guarantee on parts and materials usually comes from the manufacturer. Your plumber should install new, genuine parts, and you should be given any manufacturer's warranty information for these components. If a part fails within its warranty period, the manufacturer is responsible, though the plumber might charge for the labour to replace it if their workmanship guarantee has expired.

Always Get it in Writing

Verbal guarantees are difficult to enforce. Always insist on a written guarantee or warranty, clearly stating:

What is covered (workmanship, specific parts).
The duration of the guarantee.
Any conditions or exclusions (e.g., damage caused by misuse or subsequent alterations).

What Might Void a Guarantee?

A guarantee can be voided if:

Another plumber or unqualified person attempts to repair or alter the original work.
The issue is caused by general wear and tear, rather than faulty workmanship or parts.
The property owner has not followed maintenance instructions (e.g., for boilers).

Gas Safe Registration: Non-Negotiable for Gas Work

This point cannot be stressed enough: if your plumbing job involves any gas appliance (boilers, cookers, gas fires) or gas pipework, the engineer MUST be on the Gas Safe Register. It is a legal requirement in the UK, and for good reason. Unqualified work on gas appliances can lead to leaks, carbon monoxide poisoning, explosions, and fatalities.

Always ask to see their Gas Safe ID card, which will show their unique registration number and the types of gas work they are qualified to undertake. You can verify their registration and qualifications on the Gas Safe Register website using this number.

Never allow anyone to work on your gas appliances who cannot produce a valid Gas Safe ID card. For more information on finding qualified professionals, visit our page on Gas Safe registered plumbers.

Beyond Insurance and Guarantees: Other Important Checks

While insurance and guarantees are vital, consider these additional factors when choosing a plumber:

Experience and Qualifications: Ask about their experience, especially with the specific type of job you need doing.
References and Reviews: Check online reviews or ask for references from previous clients.
Clear Pricing: Ensure you get a clear, written quote before work begins. Understand if it's a fixed price or an hourly rate, and what's included (parts, labour, VAT).
Professionalism: A professional plumber will communicate clearly, arrive on time, and treat your home with respect.

How FixDelivered Helps You Find Trustworthy Plumbers

Finding a reliable and properly insured plumber, especially in an emergency, can be daunting. When you use a service like how FixDelivered works, we pre-vet plumbers to ensure they meet professional standards, including having appropriate insurance coverage and providing guarantees for their work. This takes the guesswork out of your search, connecting you with qualified local professionals quickly.

Our system also ensures transparent pricing, with the plumber's callout fee agreed upfront and paid directly to them, and a refundable booking fee if we can't find you a plumber.

Conclusion

In conclusion, protecting your home and ensuring peace of mind means doing your homework before hiring a plumber. Always verify their public liability insurance, understand their guarantees on workmanship and parts, and crucially, for any gas-related work, confirm their Gas Safe registration. Taking these steps will significantly reduce the risk of future problems and ensure you receive a professional, reliable service.

If you need to find a trustworthy plumber quickly, tell us your emergency.

Frequently asked questions

What is public liability insurance for a plumber?

Public liability insurance for a plumber covers costs if they accidentally cause damage to your property or injury to a third party (e.g., you or a visitor) while carrying out their work. It protects you from financial responsibility for such incidents.

How long should a plumber's guarantee on workmanship last?

As a rough guide, you should typically expect a plumber's workmanship guarantee to last at least 12 months. Guarantees for parts and materials are usually covered by the manufacturer's warranty.

Is Gas Safe registration necessary for all plumbing work?

Gas Safe registration is absolutely necessary and a legal requirement in the UK for any plumbing work involving gas appliances (like boilers or cookers) or gas pipework. For non-gas related plumbing, it is not required, but always essential for gas safety.

Need a plumber now? Tell us your emergency and FixDelivered will find and confirm an available local plumber near you, usually within the hour.

Written by the FixDelivered Team. Reviewed by Rupert Lowe, Editor. Last updated 2026-07-22.