Windows, doors and glazing
Where a report pairs Georgian wired glass with a borrowed light over the stair, what stays open about a crack the wire is holding?
What stays open is whether a crack the wire is holding still leaves a reliable pane over the stair. Georgian wired glass has a mesh cast into the pane. A borrowed light is an internal window, here over the stair, taking light from another room. The wire can keep cracked glass in the frame so the pane has not fallen. The survey has not impact-tested it, has not decided the pane is a sound screen, and has not said it must be replaced.
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?
The mesh is there so that if the glass cracks, pieces are held for a time rather than dropping at once. Holding is not the same as the pane being intact. Over a stair, falling glass would matter, but the survey did not assess that risk and did not apply a safety rule. How far the crack runs, and whether the rebate still grips the edge, were not tested.
Tell the solicitor the cracked borrowed light was described, not passed and not condemned. A glazier can advise whether the pane should be replaced, which this home survey has not decided. The lender has no impact test. Do not treat the wire mesh as a permanent repair. Until a glazier has seen it, the crack the wire is holding stays an open question about that pane over the stair.
What should you ask your surveyor?
- Was the crack recorded as held by the wire, not as a pass?
- Did you leave the borrowed light without an impact test?
- Has replacement of the pane been left undecided?
What are the typical next steps?
- Leave the cracked pane over the stair undecided.
- Ask a glazier whether that wired pane should be replaced.
- Tell the solicitor the wire was not treated as a repair.
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 mesh make cracked glass acceptable over a stair?
The survey has not said so. The mesh explains why a cracked pane can stay in place. It does not decide that the pane is a suitable screen over the stair. No impact test was done. Holding the crack is an observation, not a clearance of the borrowed light.
If the crack is only in a corner, is the rest of the pane sound?
Not established. A corner crack can be all there is, or it can run further than a glance shows. The survey did not map the crack and did not test the wire across the pane. The rest of the glass was not passed just because one line was described.