How this is calculated
Uses the standard UK trade figure of 60 bricks per m² for a single-skin wall built with standard metric bricks and 10mm mortar joints. A cavity wall doubles this, since it's built as two separate skins with a gap between them. Your chosen waste percentage is then added, and the total rounds up to a whole brick.
Frequently asked questions
A single-skin (half-brick) wall built with standard UK metric bricks and 10mm mortar joints uses roughly 60 bricks per m² — a widely-used trade rule of thumb. A cavity (double-skin) wall uses two leaves, so roughly double that.
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