Brick Sizes and Types in South Africa

Standard brick: the national default

Dimensions: 220mm (length) x 110mm (width) x 75mm (height). The standard brick is South Africa's most widely used unit, specified under SANS 227-1, and covers residential homes (internal and external walls), commercial buildings, load-bearing structures, and boundary walls and garden features. The 220 x 110mm footprint gives a 2:1 aspect ratio, which produces a stable, tightly interlocking bond pattern, and these dimensions have stayed consistent for decades, so newer work matches older construction.

Bricks per m2: approximately 60 for a single-skin wall (10mm mortar joint), 120 for double-skin (both leaves combined), or roughly 6-7 bricks per linear metre at 1m wall height.

Maxi brick: faster construction

Dimensions: 240mm (length) x 115mm (width) x 90mm (height). Maxi bricks are roughly 20-25% larger than standard bricks and increasingly used on large-scale and commercial projects. Fewer bricks are needed to cover the same area, which reduces laying time (commonly cited as 10-15% faster than standard brick), and the larger face improves uniformity on a facade with fewer horizontal mortar joints.

The trade-off: maxi bricks typically cost more per unit, fewer fit on a pallet (roughly 400-450 versus 500 for standard), some decorative bond patterns are harder to achieve at the larger size, and speciality maxi sizes can have a longer supplier lead time than standard stock.

Bricks per m2: approximately 42-45 for a single-skin wall (10mm mortar joint), 84-90 for double-skin, or roughly 4-5 bricks per linear metre at 1m wall height.

Concrete blocks: a different material entirely

Concrete blocks (a common standard size is 400mm x 200mm x 200mm) are sometimes confused with bricks, but they're a different material (cement and aggregate rather than fired clay), a different size, generally higher compressive strength, and usually plastered or rendered rather than left as a visible finish. This calculator is built for bricks; a block wall needs a separate calculation based on the block's own dimensions and coverage.

Facing bricks: the visible finish

Facing bricks are clay bricks with a decorative surface finish, widely used across South African architecture, and they keep the standard 220 x 110 x 75mm dimensions so the same bricks-per-m2 figures apply. Common finishes include smooth red/brown (a traditional clay colour with minimal texture), rough or rustic (an irregular surface for character), speckled (multicoloured with sand particles, popular in modern architecture), whitewashed or cream (lighter tones for a contemporary look), and deep burgundy or charcoal (premium accent-wall colours). Facing brick generally costs more than a plain standard clay brick, and a custom colour typically has a longer lead time than a stock colour.

Engineering bricks: built for strength

Dimensions: 220 x 110 x 75mm (same as standard). Engineering bricks are manufactured to a higher structural standard: significantly higher compressive strength and lower water absorption than a standard clay brick, which makes them more resistant to chemical attack. They're typically used for coastal properties (salt-air corrosion), industrial buildings (chemical exposure), below-ground structures (damp-proofing, basements), and critical structural elements such as load-bearing cores and lintels. They cost noticeably more than standard brick and are usually supplied to order rather than kept as standard stock.

Interlocking pavers: a different product entirely

Interlocking concrete pavers (used for driveways, patios and walkways) are sometimes grouped with 'bricks' in casual conversation, but they're a different product with a different calculation method. Pavers are quoted and calculated by area coverage per m2 (a specific paver shape and size covers a fixed area per unit, with a small allowance for cutting at edges), not by the wall-area formula this site's calculator uses. If your project is a paved surface rather than a wall, check your paver supplier's own coverage specification rather than using the brick calculator above.

Which brick type should you calculate for?

For most residential and boundary-wall projects in South Africa, standard brick (220 x 110 x 75mm) is the right default, and it's the calculator's pre-selected option. Choose maxi brick if your project is large-scale, commercial, or specifically speced for faster construction. Facing and engineering bricks share the standard brick's dimensions, so calculate them using the standard brick option, then apply your supplier's specific pricing for that finish or grade. Once you've picked a type, head back to the brick calculator and enter your wall dimensions to get an exact quantity, or read the how to calculate bricks manually guide if you'd rather work the numbers out by hand first.

Availability across South Africa's provinces

Standard brick is manufactured and stocked nationally, so availability and lead time are broadly consistent whether you're building in Gauteng, the Western Cape, KwaZulu-Natal or a smaller centre. Maxi brick and speciality facing colours are more concentrated around major metros and large manufacturers, so a rural or smaller-town project may see a longer lead time or a higher delivery cost for those specific products even though the brick itself is available nationally on order. If timing matters for your project, it's worth confirming stock availability for your exact brick type and colour with a local supplier before finalising a build schedule, rather than assuming every size and finish sits on the shelf everywhere.

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