Tijolos para Parede

Bricks per square meter of wall

Take the wall area, multiply it by how many bricks fit in a square meter for the unit you picked, then tack on some loss. Here are the indices you'll see most often: 6-hole ceramic brick 9×14×19 cm → ~25/m²; 8-hole brick 19×19×9 cm → ~22/m²; concrete block 14×19×39 cm → ~12.5/m²; solid brick → ~62/m². Say you have a 20 m² wall and you're laying 6-hole brick: 20 × 25 = 500 bricks. Add 5–10% loss for cuts and breakage and you'll want to buy 525–550 units. Those indices already account for the standard 1 cm mortar joints.

Applications and standards

People reach for this when they're pricing a job at Leroy Merlin, Cassol, Telhanorte, paying a bricklayer by the m², sizing up a self-build, or working out how much material to have delivered. On the standards side, NBR 15812 covers structural masonry made of ceramic blocks, and NBR 15270 lays out the requirements for ceramic brick itself. If the wall carries load, defer to the structural project. Sealing masonry, which isn't structural, just fills in the frame.

FAQ

Why include loss? Between cuts at corners, work around openings, things breaking in transit and the odd misaligned course, you lose 5–10%. A renovation full of cuts can push that to 15%.

Do I subtract doors and windows? Yes. Take the opening area out of the total wall area first, then apply the index.

Ceramic or concrete block? Ceramic runs lighter and costs less per unit. Concrete block is stronger and more uniform, which is why structural masonry tends to favor it.