When does the damage change?
Water appearing only during shower use can suggest a different route from continuous supply loss. Tell the investigator which activities precede a drip or stain, if you have noticed a pattern. A nearby fitting is not automatically the source.
Accessible fittings come first
Checks on accessible plumbing and existing access points can help establish the next step. Suitable testing depends on whether the suspected route involves a pressurised supply, fitting, seal or waste connection. Do not dismantle fixtures simply to prepare.
Include the room below
Damage in a ceiling, cupboard or neighbouring space may help explain how water travels. In a flat, permissions and access above or below should be arranged through the appropriate occupiers or managing agent.
Confirm the repair scope
The investigation determines whether plumbing repair is appropriate or another trade is needed. Tiling, sealing systems, decorative finishes and broader building waterproofing should not be assumed to be part of the advertised plumbing package.
What to tell us when you enquire
Describe the rooms affected and any recent plumbing work. Tell us about shared supplies, isolation restrictions or occupants who need a continuous water supply.
Related reading
Help with this problem
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Trace leaking domestic supply pipes hidden inside the property.