Damp and moisture meters
One room has a solid floor that read damp, beside a timber floor that did not. Why should those two floors not share one rating?
Not a damp reading on a solid floor and a dry reading on the timber floor beside it should share one rating. They are different constructions meeting at a doorway. The solid floor that read damp carries that reading. The timber floor that did not is not pulled into the same verdict by standing next door. A visual survey records each surface it actually tested. It does not average the two floors, and it does not design one damp treatment for both of them.
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 slabs and suspended timber floors get damp, and show it, for different reasons. A meter on a dense floor can be lifted by the material itself, while boards next to it stay dry because they are ventilated or simply not wet. Separating the readings stops one diagnosis being painted across two floors. Keep the doorway as a boundary in the notes. Proximity is not a shared construction.
Any further investigation should name which floor it is about. A quote for the solid floor is not a quote to treat the timber floor, and a ventilation quote for the timber is not a slab repair. If someone offers one system for both, ask which reading on which side of the door they are following. The report did not give a shared rating. Do not invent one when you ask for prices.
What should you ask your surveyor?
- Which floor read damp, and where on that floor was the reading taken?
- Did the timber floor show staining, or only a reading that was not damp?
- Are you giving these two floors one rating, or a rating each?
What are the typical next steps?
- Keep the solid-floor reading and the timber floor in separate notes.
- Ask any damp quotation to name which of the two floors it treats.
- Do not average the two readings into a single verdict for the room.
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
Does a damp solid floor mean the timber floor beside it is decaying?
No. The timber floor did not read damp. The solid floor next to it does not transfer that reading, or a decay verdict, across the doorway.
Should both floors be treated with the same system?
Not on this report. The readings differ. One treatment for both would be a new proposal, not the separate notes the surveyor made.