Flat Roof Replacement in Vaughan
30-Year-Old Roof Replaced with Full Drainage Fix
Project Overview
Commercial Plaza
23,000 sq ft
5 Days to Complete
Vaughan, Ontario
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The ROOF CONDITION
Nobody replaces a 30-year-old roof because they want to. They replace it because the leaks stop being manageable. On this Vaughan commercial property, membrane splits and failed perimeter flashings had turned the roof into a funnel.
Water ran off the edge, down the brick face, and froze inside the masonry overnight. Season after season, the brickwork deteriorated a little more. Patching the membrane bought time but fixing the real problem meant rethinking how water left the roof entirely.
The REPLACEMENT PROCESS
Everything came off down to the deck. Once the old membrane and insulation were cleared, the crew installed a new 4-ply BUR system with 1.5″ polyiso insulation underneath.
To stop rainwater from reaching the brickwork, the perimeters were extended beyond the brick face using ¾” plywood and sloped so water redirects back onto the roof surface and into the drainage system instead of down the wall.
Old BUR System at End of Life
30 years of Ontario weather had left the membrane split and the perimeter flashings failing across the roof.
Water Damage to Brickwork
Rainwater running off the roof edge had been freezing into the brickwork, causing structural damage below the roofline.
Tear-Off and Deck Prep
The old system was removed down to the deck so the crew could assess the substrate and prep for the new assembly.
New 4-Ply BUR Installed
The finished roof system with new insulation, sealed penetrations, and extended perimeter edges to redirect water away from the brickwork.
The VIDEL DIFFERENCE
A leaking roof is expensive. A leaking roof that’s also destroying your brickwork is a capital emergency.
For years, this building owner watched the same cycle repeat. Water gets in during winter, mortar crumbles by spring, repair invoices arrive by summer, and the whole thing starts over again in November.
Replacing the roof membrane stopped the leaks, but extending the perimeter edges is what actually broke the cycle. Water stays on the roof now, moves to the drains, and the brickwork stays dry through the worst of Ontario’s freeze-thaw seasons. A 10-year warranty on workmanship, labour, and materials backs the entire project.
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