Age and type of house
A loft beam bears on a single-skin wall. Has anyone calculated that bearing?
No. This survey has not calculated that bearing. A loft beam sitting on a single-skin wall was seen as an arrangement: the beam end lands on a wall only one leaf thick, with no calculation of the load, the bearing or the capacity of that leaf. Single-skin masonry is a slender support. Whether it is adequate depends on span, load and condition, which a visual note does not compute. The report records how the beam sits. It has not produced calculations and has not decided the wall is strong enough.
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 beam delivers a concentrated load to a short length of wall. In a loft that load can include roof and ceiling. Single-skin masonry has less thickness to spread it than a cavity wall or a pier built for the purpose. The survey can see whether the beam actually rests on the leaf and whether the masonry under it is cracked or crushed. It cannot turn that view into a capacity. No structural calculation was done on this visit. The arrangement was observed. It was not justified by arithmetic.
Ask the solicitor for any engineer's calculation or building-control paper for this beam. The survey has not issued a building-regulations certificate and has not treated guidance for building work as a calculation of its own. If those papers are missing, a structural engineer can assess the bearing. Do not tell a lender the beam is adequate because it is already up there. Standing in place is not a calculation. The finding is an uncalculated bearing on a single skin.
What should you ask your surveyor?
- Does the beam sit on a padstone, or directly on the single-skin leaf?
- Does the report note crushing or cracking at the bearing, or only the arrangement?
- Is any engineer's calculation actually in the pack?
What are the typical next steps?
- Treat the bearing as seen and not calculated.
- Ask the solicitor for any structural calculation or building-control paper.
- If none exists, instruct a structural engineer. This survey did not do the sums.
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 level beam prove the single-skin wall is adequate?
No. Level means it has not obviously sagged. It does not calculate the load on a single-skin bearing. The survey has not done that calculation and has not cleared the wall. Adequacy is an engineer's question when the support is this slender. A tidy loft is not the arithmetic.
Can a calculation be added later from the photographs alone?
Not as a proper check from pictures alone. A calculation needs sizes, span, loads and how the beam bears, taken under an engineering instruction. The home survey has not provided it. Photographs can remind an engineer what was there. They are not the bearing calculation the report left out.