Location: Scarborough, Ontario
Roof Type: Modified Bitumen Roof
Project Scope: Restoration of a 15-year-old modified bitumen roof membrane, including roof scanning, membrane repairs, perimeter and curb flashing replacement, a new cold adhesive flood coat with embedded pea stone gravel, full-coverage sheet metal flashings, and a new paver walkway for HVAC access.
Industrial Roofing Services Limited was brought in to restore a 15-year-old modified bitumen roof in Scarborough. Rather than replacing the existing membrane, the goal was to restore the roof and address the deficiencies that had developed over its service life, with the project designed to provide the client with another 15 years of useful roof life.
The first step was to scan the roof to confirm that no saturation was present within the existing assembly. With the roof confirmed to be suitable for refurbishment, our team proceeded with fixing the flat roof’s deficiencies identified throughout the roof field.
Once the membrane repairs were completed, attention shifted to the areas most critical to maintaining a watertight roof: the perimeter and curb flashings. These details were redone before the roof field received a new cold adhesive flood coat with 3/8-inch pea stone gravel embedded into it. New full-coverage sheet metal flashings were also installed at the perimeter walls and curb flashings, completing the restoration of the roof’s protective details.
Our crew completed the roof refurbishment, which included:
Before proceeding with refurbishment, it was important to confirm the condition of the existing roof assembly. Our team scanned the roof to verify that no saturation was present. With the scan confirming the absence of saturation, the existing 15-year-old modified bitumen membrane could be restored rather than replaced.
The roof field was not the only area requiring attention. The perimeter and curb flashings also needed to be redone to establish tight waterproofing at these details. New full-coverage sheet metal flashings were subsequently installed at the perimeter walls and curb flashings as part of the refurbishment.
The Scarborough project allowed Industrial Roofing Services Limited to restore a 15-year-old modified bitumen roof rather than replacing the existing membrane. After confirming that no saturation was present, our team repaired the deficiencies throughout the roof field and rebuilt the perimeter and curb flashing details before applying the new cold adhesive flood coat and pea stone gravel.
The completed refurbishment was designed to provide the client with another 15 years of roof life. The project also included new full-coverage sheet metal flashings and a paver walkway to the HVAC units, giving maintenance technicians easier access while completing future HVAC work.
