Age and type of house
The breather membrane of a timber-kit house is torn at the eaves where the surveyor could see it. What of the frame behind the intact membrane was not seen?
The frame behind the intact membrane was not seen. The surveyor could see a tear in the breather membrane at the eaves of this timber-kit house, and could see only what that tear and the eaves opening allowed. Where the membrane is still intact, the studs, plates and sheathing behind it stayed covered. A tear is a defect in the sheet at that spot. It is not a window onto the rest of the frame. The survey has recorded the torn eaves membrane. It has not inspected the frame the sound membrane still hides.
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?
A breather membrane sits outside the timber frame and inside the cladding. It is meant to shed water that gets past the outer skin while letting vapour leave the frame. A tear at the eaves is a break in that sheet where wind-driven rain can reach further in, and the eaves are a place the surveyor can sometimes see it. The intact membrane elsewhere covers the timber rather than revealing it. The visit cannot claim to have inspected studs it did not uncover.
Tell the solicitor the membrane is torn at the visible eaves and that the frame behind intact membrane was not seen. A timber-frame contractor can advise how the tear should be repaired and whether any local opening is justified. Do not treat the tear as proof the whole frame is wet, and do not treat the intact sheet as proof the studs behind it are dry. The survey has not tested moisture in that hidden frame.
What should you ask your surveyor?
- Where at the eaves is the breather membrane torn, and how far could you see?
- What of the frame behind the intact membrane remained covered?
- Did you test moisture in the hidden frame, or only see the tear?
What are the typical next steps?
- Record the tear at the eaves as a membrane defect you could see.
- Do not describe the frame behind intact membrane as inspected.
- Ask a timber-frame contractor what repair of the tear would involve.
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
If the tear is only at the eaves, has the rest of the frame been seen?
No. A tear at the eaves shows the membrane at the eaves. The frame behind intact membrane elsewhere was not seen, and the survey did not follow the tear by stripping the kit. The limit of the view is the limit of the note. The rest of the frame stays covered.
Does a torn breather by itself prove the studs are wet?
No. A tear is a route moisture could take. It is not a moisture reading in the studs, and the survey did not take one. The frame behind the intact membrane was not seen at all. The torn sheet should be repaired as a defect in the sheet, not rewritten as a proved wet frame.