Roof leaks tend to be insidious that way. Here, we explore the causes of skylight leaks, how to repair a leaking skylight on your own and tips for preventing future leaks through proper maintenance.

Mayor Mark Sutcliffe told reporters the green roof was only ever meant to be an option, and it turned out to be an expensive one. "It hasn't been removed," he said. "It wasn't a part of the 2.0 plan.

"A property owner who didn't want to put in a green roof could be forced to pay $50 or $75 or $100 a year, but it is money that would then help offset the cost of a green roof program," Ferraro said.

The Vancouver Convention Centre’s green roof, completed in 2008, is the largest in Canada at 2.4 hectares. It reduces the heat inside by 95 per cent in summer and prevents 26 per cent of heat ...