Inadequate lintel end bearing
What it looks like
Cracking in the masonry at the ends of a lintel, or deflection visible along the soffit of the opening.
Why it happens
Lintel cut or positioned with less bearing than the manufacturer requires, or bearing onto a cut brick, a soft joint, or masonry that has not gained strength.
What it costs if it is missed
Structural distress over the opening, cracked masonry, and remedial propping and rebuilding — a serious and expensive defect once the wall is finished.
How to inspect for it
Measure the actual bearing at both ends before building over, and check it against the lintel schedule and the manufacturer table for that span.
How to prevent it
Order lintels to suit the opening plus the required bearing at each end rather than cutting to fit, and never bear a lintel onto cut or partially set masonry.
Basis in regulation
Last updated 23 August 2026. This is our editorial summary of publicly available regulation and site practice, not building control approval or a warranty determination.