How much does it cost to repoint and seal the mortar joints on a brick house in Leslieville?

Repointing and sealing the mortar joints on a brick house in Leslieville typically costs between $5,000 and $20,000 for a full home, depending on the home's size, brick condition, mortar type, and accessibility. On a per-square-foot basis, expect to pay $10 to $30 per square foot for repointing, which involves grinding out deteriorated mortar to a minimum depth of 20mm and replacing it with fresh mortar properly tooled to shed water.

Leslieville's housing stock is predominantly late-1800s to early-1900s brick — these are heritage homes with softer brick that requires careful mortar selection. This is one of the most critical factors in your project. Heritage brick homes in Leslieville must be repointed with lime-based mortar (Type O or Type K), not modern Portland cement-based mortar (Type S or Type N). If a contractor proposes Portland cement mortar on your century-old Leslieville brick, that is a red flag. Portland cement mortar is harder than the brick itself, which means frost and moisture damage gets transferred into the brick face rather than the sacrificial mortar joint. Within a few winters, you will see spalling — chunks of brick face popping off — and that damage is irreversible.

For a typical two-storey Leslieville semi or rowhouse, the front facade alone usually runs $3,000 to $8,000 for repointing, while a full perimeter job on all four sides pushes into the $8,000 to $20,000 range. Scaffolding adds $500 to $1,500 depending on height and configuration, and most Leslieville homes need at least some scaffolding for the upper storeys. After repointing is complete, applying a penetrating concrete and masonry sealer (silane or siloxane-based) adds $3 to $7 per square foot and provides excellent protection against Toronto's freeze-thaw cycling and road salt splash — both significant concerns on busy Leslieville streets like Queen East and Dundas.

GTA-specific factors drive costs on this type of project. Toronto experiences over 50 freeze-thaw cycles per winter, and every one of those cycles works moisture deeper into deteriorated mortar joints. Leslieville's proximity to Lake Ontario also means higher ambient humidity, which accelerates mortar deterioration compared to inland neighbourhoods. The clay soils common across the east end hold moisture against foundation walls, compounding the problem below grade. If your mortar joints are failing at the foundation level, you should also assess whether the foundation parging and grading are directing water away from the house — repointing above grade while water is pooling against the foundation below is treating the symptom, not the cause.

When getting quotes, ask each contractor specifically what mortar type they plan to use and verify it is appropriate for your brick's age and hardness. Request WSIB clearance certificates from every contractor — Ontario law requires it, and you can be held personally liable for workplace injuries if your contractor is uninsured. Get at least three quotes, and be wary of the lowest bid — improperly repointed mortar joints fail quickly in the GTA climate and cost more to redo than they would have cost to do right the first time. The best season to schedule this work is late spring through early fall, when temperatures remain consistently above 5°C for at least seven days after application to allow proper curing. Toronto Parging can match you with experienced masonry contractors through the Toronto Construction Network who understand heritage brick and GTA climate conditions.