Wall ties and cavity insulation
The report mentions a tie bar next to a bowing gable. Has restraint the bar suggests and does not measure been tested, or only named?
Restraint was not measured. A tie bar beside a bowing gable suggests that someone tried to restrain the wall, but the survey did not test that restraint. A bow is a shape. A bar is a rod, usually with plates. Neither reading tells you the tension in the bar, whether it is still engaged, or how far the gable is out of plane. The report records the bow and the bar. It has not measured movement and it has not tested wall ties.
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?
Tie bars are a traditional restraint across or against a wall that is leaning. The external plate shows where the rod arrives. It does not show whether the rod is slack, whether the plate is crushing the masonry, or whether the bow has increased since the bar was fitted. Measuring a bow needs a straight reference and a method, which this visit did not apply as a test. Suggestion is the right word. Tested is not.
Ask the solicitor for any structural design, installation record or monitoring of the tie bar and the gable. A structural engineer can measure the bow and comment on the restraint if you need more than a note. Tell a lender the bar and the bow were seen and that restraint was not measured. Do not describe the gable as stabilised. The survey has not said that, and it has not checked cavity ties as part of the same sentence.
What should you ask your surveyor?
- Was the tie bar only seen beside the bow, not measured?
- Has restraint been left as a suggestion rather than a test?
- Were cavity wall ties left untested as well?
What are the typical next steps?
- Treat the tie bar as named, not as measured restraint.
- Ask the solicitor for any design or monitoring of the gable.
- Tell a lender the bow was not measured on this visit.
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 painted plate mean the bar was recently installed?
No. Paint can be new on an old plate. The survey did not date the bar and did not measure its restraint. Ask the solicitor for installation papers if age matters. Decoration is not a structural record, and it does not show whether the gable has moved since the rod was put in.
Is a bowing gable the same defect as cavity-tie failure?
Not automatically. A gable can bow from roof spread, lack of restraint or tie corrosion, among other causes. This visit saw a tie bar and a bow. It did not measure restraint and it did not test cavity ties. Do not collapse those causes into one. The bar does not identify which mechanism produced the bow.