How many bricks do I need per m²?
Quantities, wastage allowances and pack sizes for standard walls.
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For a standard half-brick (single-skin) wall built with a 10mm mortar joint, you need approximately 60 bricks per square metre.
Working out your total
Multiply the wall area in square metres by 60, then add a wastage allowance for cuts, breakages and snapped headers.
- Straightforward wall, few openings: add 5%
- Wall with several openings, corners or a gable: add 10%
- Complex detailing or reclaimed-style bricks: add 15%
Cavity walls
A standard cavity wall uses the same 60 bricks per m² on the outer skin, plus blockwork on the inner skin — the brick count itself doesn’t change.
Always round up to the nearest full pack, and check the pack quantity on the product page before ordering.
Related: once you have your brick count, work out mortar with how much sand and cement you need.
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