Roofing & Waterproofing in Thornhill

Both sides of Yonge. West of it that means Brownridge, Crestwood-Springfarm, and the streets around Uplands; east of it, Royal Orchard, Bayview Fairway, and the office and condo buildings of Commerce Valley near Highway 7. Thornhill Village sits across the line in the middle, and our North York shop is near enough that response times do not change from one side of Yonge to the other.

It depends which side of Yonge Street you are on. West of Yonge falls under the City of Vaughan, east of Yonge under the City of Markham, and the two have different processes and different fees. We establish which applies before quoting and file the application ourselves, which avoids the delay that catches contractors unfamiliar with the split.

Yes. The office and condo buildings along Commerce Valley Drive and the Highway 7 frontage are almost all flat roofed, and the leaks we trace there usually begin at roof drains where water has sat long enough to soften the insulation board, or at membrane laps that have let go along their edges. Condition reports are laid out so a building manager can file them with the reserve fund documents and budget from them directly.

Very. We have worked out of North York since 1999 and Thornhill has been part of that from the start, from nineteenth century houses on the old village streets to the 1980s subdivisions that filled in around them. Because whole crescents went up at once to the same plans, the fault we find on one house tends to turn up next door a year or two later, so we can tell an owner what is coming rather than guess.

Yes, and they are a different job from the subdivision stock around them. The houses on the old village streets near Yonge and Centre Street tend to have plank sheathing rather than plywood under the roof, chimneys laid in soft mortar, and in places slate, cedar, or copper that should be matched rather than swapped for asphalt. We work in those heritage materials, and where a street's heritage status limits what can change on a roof, we confirm it before quoting.

Mostly what the trees and the slope are doing. Ravine lots along the Don sit under heavy canopy, so eavestroughs and valleys clog faster, north facing slopes hold moisture long enough for moss to take hold, and branches resting on the roof wear through shingles where they touch. Below grade, a house perched near the top of a ravine bank can see water arriving across the lot rather than straight down, which changes where a drainage fix belongs.