Age and type of house
What does a solid brick wall in a Victorian terrace change about a damp comment?
A Victorian terrace wall is often solid brick, with no cavity to fill or to drain. Damp advice written for cavity walls does not describe it. Rain can cross the brick, and a high path can bridge the damp-proof course. The survey should say the wall is solid if that is what it found.
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?
Solid walls dry to both faces. They were not built with a gap, wall ties or cavity insulation. A meter reading at the skirting still does not name the cause. It can be rain, a bridged course, a leaking pipe, or condensation on a cold wall. The useful sentence is which of those the surveyor could see evidence for.
Government damp guidance starts with the cause. A contractor’s leaflet about filling cavities is the wrong leaflet. If the report recommends cavity extraction or cavity fill on a wall it has also called solid, ask for that contradiction to be corrected before you price any work.
What should you ask your surveyor?
- Did you confirm a solid wall, or are you assuming it from the age?
- Which cause did you actually see: rain, a high path, a leak, or only a meter reading?
- Would any of your advice change if there is no cavity?
What are the typical next steps?
- Do not accept a cavity-insulation quote for a wall the survey has called solid.
- Photograph the outside ground level against the brick before anyone digs.
- If the purchase depends on the cause, ask for an investigation of this wall type, not a standard cavity treatment.
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
Is every Victorian wall solid?
No. Some have been rebuilt with a cavity, and some rear additions are different from the front. The survey should say what it found on each elevation it could see.
Does solid brick mean the damp-proof course does not matter?
No. A course at the base of a solid wall still needs the outside ground kept below it. A cavity is not what makes that true.