Roof Drainage 101: Can You Spot the Risks?

This week’s quiz is from Avoiding pitfalls and navigating retrofits in roof drainage design. Proper roof drainage isn’t just a design detail—it’s essential for protecting buildings, extending roof life, and ensuring occupant safety. Take this short quiz to see how well you understand the risks of standing water and the solutions available for low-sloped roofs.

Quiz - Aug 27
1. Why is it important to avoid standing water on a low-sloped roof?
2. According to the National Plumbing Code of Canada, what is the main purpose of roof drainage design calculations?
3. Which of the following is NOT a recommended retrofit option to improve drainage on an existing roof?

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