Flat roof guides
Plain answers to the questions Ontario owners and managers ask before they call a roofer. Each guide is written to be used, not just read.
Guides
What a flat roof costs in Ontario
Price tables by membrane and the factors that move a quote up or down.
View detailsRepair or replace a flat roof
A decision path based on moisture, age, layers and the cost of repeat repairs.
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Choosing a flat roof material
EPDM, TPO, PVC, modified bitumen and built-up roofing compared in plain terms.
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How long does a flat roof last
Service life by material and what shortens or extends it in Ontario.
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Flat roof maintenance checklist
What to check in spring and fall, and what to photograph.
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Flat roof in winter
Snow, ice and what you should and should not do on a frozen roof.
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Finding a flat roof leak
Why the stain is rarely under the hole, and how to trace it.
View detailsPreparing for a roof quote
The information that gets you a firm number faster.
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Hiring a flat roofer
Questions to ask any contractor and the papers to see before work starts.
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Re-roofing permits in Ontario
How to find out what your municipality requires.
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Condo roof planning
A planning path for boards and managers.
View detailsHow to use these guides
If you have water coming in right now, start with finding a flat roof leak and then request a quote. If you are comparing a repair against a new roof, read repair or replace first. If you manage a building, start with condo roof planning or the property types pages.
Questions about the guides
Are the prices in the guides final?
No. They are starting prices based on typical Ontario contractor rates. Your written quote is the price that counts.
Can I ask a question that is not covered?
Yes. Use the quote form and describe the roof and the question.
Leak, damage or an old flat roof?
Send a few details and photos. We reply by email with next steps and a written quote.