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Roof Capping and Exterior Expansion Joint Repair

Updated: Mar 5, 2021

Two more projects recently completed at the high-rise residential building located on Lee Centre Drive in Scarborough, Ontario involved roof capping and exterior expansion joints.

Roof Capping

The aluminum capping had shifted, creating gaps around the roof edges. The gaps needed realigning, caulking, and painting to remedy the issue with leakage caused by joint separation (joints between the aluminum sheets).

The repair procedure was as follows:

  1. Existing caulking was removed.

  2. The aluminum was cleaned and recaulked.

  3. The capping was painted, for a fresh look and protection.

Exterior Expansion Joint

Even though we specialize in negative-side expansion joint injection, sometimes portions of expansion joints are not accessible from the interior (as was the case at this location), so we followed traditional repair methods.

Expansion joint waterproofing was carried out in the following manner:

  1. The asphalt surface was cut, to access 20 feet of expansion joint inaccessible from the garage below.

  2. Part of the podium roof was exposed, to be cleaned and prepped.

  3. Any cracks around the expansion joint were filled, and the expansion joint was replaced.

Despite the use of traditional, more invasive repair methods, the road was reopened to traffic in a day.

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