Age and type of house

The brochure calls the finish brick slips on a timber frame. Can the survey describe that wall as a traditional cavity?

No. Brick slips fixed to a timber frame are a thin finish, not a traditional cavity wall of two masonry leaves. A sales brochure does not become the wall the surveyor saw. Slips can hide sheathing, a breather layer and battens, and the visit does not strip them. Call the face a slip finish on a frame. Do not copy cavity-wall repairs onto a skin that is not a structural brick leaf.

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 traditional cavity has an outer leaf of brick or block, a gap, and an inner leaf that is also masonry. Slips are slices of clay stuck or clipped to a backing. They can look like brick from the pavement and still be only a cladding. Wall-tie comments written for two heavy leaves do not automatically belong on that backing. The survey should say how the frame was inferred: from a hatch, an eaves gap, a meter cupboard, or only from the brochure.

If the slips are cracked or hollow-sounding, that is a comment on the finish and its fixings, not proof the studs have failed and not proof they are fine. An empty gap behind a slip system is not itself a defect, and it is not the same thing as a cavity the survey measured. Keep the brochure in the file as a claim. The report should rest on what was visible, and on an honest line where the backing was covered.

What should you ask your surveyor?

Did you see a timber frame, or only a slip finish that the brochure calls a frame?
Where, if anywhere, was the backing, the membrane or the sheathing actually visible?
Are you describing slips, or a traditional cavity with two masonry leaves?

What are the typical next steps?

Keep the brochure wording separate from the survey's construction line.
Do not ask a bricklayer to repoint this as if it were a solid outer leaf.
If the frame matters to you, ask where it was seen before you exchange.

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

Can slipped bricks still be a real outer leaf?

Only if the survey could see masonry of leaf thickness, not a tile-like slip. The name on a brochure is not that evidence.

Should wall-tie failure be assumed because the face looks like brick?

No. Tie failure is a cavity-wall mechanism. Name it only if a cavity of that kind was identified.