Windows, doors and glazing
One double-glazed pane is misty and the others are clear. Has the survey failed every window in the house?
No. The survey has not failed every window. One double-glazed pane is misty and the others are clear. Mist inside the unit means that seal has failed. The clear panes were not given the same fault. The visit records the one misty pane. It has not condemned the other windows, has not failed their frames, and has not said the rest will mist. The finding is a single failed unit. The others remain as they were seen.
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 sealed unit is two panes with a gap. When the edge seal fails, moisture sits in the gap and the glass mists where a cloth on the room side will not clear it. That failure belongs to that unit. The next window can be a different age. The survey takes them one at a time. One misty pane is not a house-wide glazing failure, and it says nothing by itself about locks or frames. Those were not what the mist demonstrated.
Tell the solicitor that one sealed unit has failed and the others looked clear. A glazier can replace the misty unit. The survey has not specified every window for replacement and has not priced the one that failed. Do not tell a lender the glazing throughout has failed. If a guarantee names the units, the solicitor can ask whether it still covers this pane. The survey has not decided that paper.
What should you ask your surveyor?
- Which window holds the misty pane?
- Were the clear units seen from inside as well as outside?
- Is there a glazing guarantee for the solicitor to read?
What are the typical next steps?
- Limit the failure to the one misty sealed unit.
- Do not tell the lender every window has failed.
- Ask a glazier about that unit rather than the whole house.
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 the mist mean the frames are rotten?
No. Mist is moisture in the gap of that sealed unit. It is a glazing failure, not decay in the frame. The survey has not turned the mist into a rot finding. The other panes were clear. Frame condition is a separate look. One failed unit does not condemn the frames or every other window in the house.
Were the locks on the clear windows tested?
No. Clear glass only shows those units were not misty. Locks and hinges were not tested by that look, and the survey has not passed or failed the ironmongery from it. The mist answers for one sealed unit. How the other windows open is untested unless the report says so about a particular one.