At what point do Ottawa masons stop replacing spalled bricks one by one?

We found no source that sets a number or percentage where individual brick replacement automatically gives way to a larger rebuild; that call comes from what a mason sees on the wall. The decision turns on how the damage is distributed, how the surrounding masonry is holding together, and what the wall is doing structurally.

A mason will look at a few things when assessing whether to replace bricks one by one or to take down and relay a section. If the mortar joints around the damaged bricks are also failing, or if the wall has moved or bowed, individual replacement may not address what is happening behind the face.

Published Ontario contractor pricing for 2025-26 puts individual spalled brick replacement at about $20 to $45 per brick installed. Your quote will differ. Small jobs can carry a minimum charge, so ask about one. There are too few published prices for section rebuilding to quote a range; ask each mason to give you a written price that separates labour, materials, matching brick sourcing, and any scaffolding or lift needed for upper courses.

When you have two written quotes side by side, compare them on the same points: the wall area and the number of bricks each mason is pricing, the joint depth and mortar type proposed, where matching brick is coming from and whether there is a cost for sourcing it, whether scaffolding is included or added separately, and what each quote says about cleanup and disposal of broken brick and mortar debris.