Bricks and mortar for a single or double-skin wall — standard UK brick sizes.
A single-skin brick wall uses about 60 standard UK bricks (215 × 102.5 × 65mm with 10mm joints) per square metre. Multiply wall area by 60 for the brick count, and allow about 0.5kg of mortar per brick. Double-skin walls double both figures.
About 60 bricks per square metre for a single-skin wall with standard 215×102.5×65mm bricks and 10mm joints.
Roughly 500kg of dry mortar mix (about 20 × 25kg bags) per 1000 bricks, depending on joint thickness.
Single skin (one brick thick) is for garden walls and sheds; a house external wall is usually a cavity (two skins with a gap).