Timber decay and woodworm
Where a report pairs feather-edge weatherboarding with the sole plate, what stays open about a wet board the paint is bridging?
What stays open is the wet board the paint is bridging, and the sole plate behind the lowest boards. Feather-edge weatherboarding is tapered boards lapped on the frame. Paint can seal those laps so a wet board cannot shed or dry, and it can hide softness. The sole plate is the timber at the foot. The survey paired the boards with that plate. It did not lift a board, did not test the plate, and has not decided there is decay.
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?
Feather-edge boards are thicker at the bottom and lap so each throws water outwards. Paint across the lap can bridge the gap and hold a wet board against its neighbour. The sole plate sits at the foot of the studs, close to splash and just behind those boards. A wet board there is a reason to wonder about the plate. The paint was seen. The timber under it was not.
Tell the solicitor the bridging paint and the sole plate were paired, and that neither was opened. A timber specialist can lift a board by agreement if the plate must be seen, which this survey did not do. Do not treat a painted elevation as a dry frame. The lender has no decay result. Any repair of boards or of the plate needs its own look at the timber, not a decision taken from the paint surface.
What should you ask your surveyor?
- Did you leave the wet board under bridging paint unopened?
- Was the sole plate named but not tested?
- Have you avoided deciding that the frame has decay?
What are the typical next steps?
- Leave the bridged board and the sole plate undecided.
- Ask a timber specialist if a board must be lifted to see the plate.
- Tell the solicitor the paint surface was not a decay test.
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 intact paint mean the boards are dry?
No. Paint can look whole while it bridges a lap and holds a wet board. The survey saw the painted feather-edge work and did not test under the film. An even coat is not a moisture reading. The board the paint is bridging stays an open question, and so does the sole plate.
Is the sole plate the same timber as the lowest board?
No. The lowest board is cladding. The sole plate is the horizontal frame member behind the foot of the wall. The report pairs them because one can hide the other. It does not make them the same piece of wood. The plate was not seen just because the board was.