5 Common Bathroom Fitter Problems and When to Call a Professional

The problems that come up most

These are the jobs bathroom fitters are most commonly booked for. Catching them early almost always costs less:

• leaks behind tiles appearing months later
• poor falls to shower wastes causing pooling
• mould returning because ventilation wasn't addressed
• loose tiles from inadequate adhesive coverage
• low water pressure after a refit

What you can safely check yourself

Before calling anyone, gather information: when the problem started, whether it's getting worse, and clear photos. This helps a professional give you a realistic first assessment and helps you describe the job accurately when collecting quotes.

Basic observation is always safe; DIY repair is not always. If the problem involves gas, electrics, working at height or the structure of your home, stop at observation and call a professional.

Signs it's time to book someone

Book a professional when the problem is getting worse, when it involves safety, when your own attempts haven't held, or when you simply don't know the cause. A correct diagnosis is usually cheaper than a wrong repair.

For context on cost: A full bathroom refit typically costs £3,000–£7,000 in labour for a standard bathroom, taking one to two weeks. En-suites and wet rooms vary widely with spec.

Choosing who to call

Bathroom fitting is unlicensed, but bathroom electrics are notifiable under Part P and any boiler or gas work needs a Gas Safe engineer. Ask who does each element and verify their registrations.

Check recent reviews before booking — Hammerscore company pages for bathroom fitters combine ratings from several platforms, and the low-star reviews tell you most about how problems were handled.