Find My Leak

Home / Blog / Guildford

Guildford · Leak detection guidance

A damp bedroom wall behind a bathroom in Guildford: compare both sides

Find My Leak · 13 October 2026 · 2 min read

Bathroom wall leak detection in Guildford may start in the bedroom next door rather than inside the bathroom itself. A patch behind furniture can raise several questions at once. Recording both sides of the wall helps a professional assess the relationship without assuming that a fitting directly opposite the stain is definitely responsible.

Use fixed points to describe the wall

Identify the wall by its doors, corners and window positions. Photograph it from the bedroom entrance and take a second image of the affected section. On a simple sketch, mark the bath, basin, shower and toilet on the bathroom side. Include existing service panels, but do not remove panels or tiles to discover a pipe route.

Furniture can hide the extent of a mark. Explain what was moved when the damp was first noticed and whether the area had been covered for some time.

Record a pattern without provoking a leak

Write down ordinary bathroom use before each observed change: a shower, a filled basin or an unused evening. If different people use the room differently, note that too. The aim is to provide a history for professional assessment, not to conduct repeated water tests that could cause more damage.

Keep descriptions separate from conclusions. For example, a mark noticed after showering is an observation; a failed shower pipe is a diagnosis that still needs evidence.

Understand the role of an image

A thermal camera may help an investigator examine surface patterns, but it does not see through a wall. FLIR explains that thermal imaging measures the surface rather than showing hidden pipework directly. Ask how any image will be considered alongside inspection and other findings.

A useful explanation should identify what the image supports and what remains uncertain. The brightest or darkest colour on a screen is not, on its own, a repair instruction.

Prepare a joined-up enquiry

Send the Guildford postcode, your two-sided sketch and the date the bedroom mark was discovered when requesting a Find My Leak callback. Mention any previous sealing, plumbing or decorating work and whether it changed the symptom. Include access restrictions in both rooms, not only the bathroom.

Ask whether the visit can consider the visible damage and the adjacent plumbing together. Agree what happens if further investigation is needed before anyone recommends opening the wall, and who will explain the proposed access and repair arrangements.

Further reading

Prepared with AI assistance using the sources listed above. General information cannot diagnose an individual property. Contact us to discuss your circumstances.

Would you like to talk it through?

Tell us what you have noticed and request a callback for further information.

Find out more — request a callback