Damp and moisture meters
If a solid bathroom wall is damp on the inside face but the skirtings are dry, is that rising damp?
No. Damp limited to the inside face of a solid wall in a bathroom, with dry skirtings, fits condensation or splash on the cold inner face. Rising damp would be expected at the base, not as a mid-wall patch above a dry skirting. The survey should describe that limit.
Last reviewed 24 October 2026. Written for buyers in England and Wales unless this answer says otherwise. No named surveyor has signed this page. It is general guidance, not a report on your house, and not legal advice.
What is the fuller explanation?
Solid walls in bathrooms are cold. Steam condenses on the inner face, tiles hold splash, and mould follows the cold area, often halfway up the wall or at an external corner. Dry skirtings mean the base is not the wet part. That single observation is enough to stop a rising-damp story. A leak from a pipe chased in the wall can still wet a mid-height patch, so the shape matters: a wide cold-face bloom is not a vertical pipe stripe. The surveyor sees the face and the skirting. They do not strip the tiles.
A home survey does not guarantee the masonry behind the tiles and does not flood the room. Dry skirtings are a finding, not a certificate for the whole wall. If the report still recommends a damp-proof course for this pattern, ask why, given the dry base. Ventilation and the way splash is contained are the matching questions. An injected course at a dry skirting does not stop steam on a cold solid wall.
What should you ask your surveyor?
- Are the skirtings dry while the damp sits higher on the inside face?
- Is this a wide cold-face pattern, or a stripe that might be a pipe?
- Is there a working extract, or steam with nowhere to go?
What are the typical next steps?
- Do not inject a damp-proof course for a mid-wall bathroom patch with dry skirtings.
- Separate a pipe stripe from a general cold-face bloom.
- Deal with steam and splash before you treat the masonry as saturated from the ground.
Costs vary with the building and with who you instruct. Where this page does not cite a published figure, ask the surveyor, a relevant specialist, or your solicitor for a written quote. Do not treat a forum average as the price.
Also asked about this
Can splash behind tiles wet the face while the skirting stays dry?
Yes. Failed grout can wet the back of tiles at shower height only. The survey may not see behind the tiles.
If a bathroom meter reads high on a cold solid wall, is that rising damp?
No. A cold solid wall can read high on the surface from condensation. That reading is not water rising from the ground.