Flat Roofs Toronto, Flat Roof Repair & Flat Roof Replacement

Customer reviews

This business has 62 Google reviews. We show up to five of them below - read the full listing on Google before deciding.

Laurie Mace

Dec 1, 2025

Olti and crew were fast, thorough and accurate. No room for error or delay (not even a bit) when it comes to installing and repairing flat roofs.

Sean Fetterman

Sep 15, 2025

Consumers beware. I got a quote from this company earlier this year and what I found was alarming. They have been operating for nearly 2 years without being registered in Ontario at all. Don’t take their claims at face value. Do your own due diligence — here is the official Ontario Business Registry record confirming the facts: ( Search their exact name on Ontario Business Registry). Even more concerning, their Google reviews dropped from 270+ down to just a handful — a suspicious move that raises serious questions about credibility and transparency. (I have documented this and will be reported to google business profile). Because of these issues, I reported the business and its parent company to Consumer Protection Ontario and the CRA for investigation.

Wendy Gilbert

Oct 21, 2022

Great company to work with! The team that came from Flat Roofs were very professional, took care of our needs and had excellent customer service. The prices they charged were reasonable too!!

Doris Hopkins

Oct 21, 2022

They were prompt, took great pride in their work and listened to our needs to deliver us with the expected result. My roof looks brand new and I can’t recommend them enough. Thank you so much Flat Roofs!!

Michelle Dorsey

Oct 14, 2022

The team was amazing while repairing our flat roof. They were very helpful, kind, totally dedicated and provided professional service. I would highly recommend Flat Roofs Toronto! To the people in need of roofing services in East York

Read all reviews on Google

Before you hire a roofer in Ontario

No. Roofing is not a compulsory trade in Ontario, so there is no licence to verify - which makes insurance and WSIB coverage the checks that matter.

WSIB clearance certificate

The most important document in this trade. Ask for a current certificate and confirm it names the company doing your work, not a subcontractor you have never met. It should be dated within the last 90 days.

Verify with: WSIB clearance certificates can be validated online by the account number.

Check Flat Roofs Toronto, Flat Roof Repair & Flat Roof Replacement on the official register

General liability insurance

Two million dollars minimum for residential roofing. Request the certificate of insurance directly from the broker rather than a photocopy, and confirm the policy is current.

Manufacturer shingle certification

Optional but meaningful. Manufacturers certify installers, and certification is what unlocks the extended system warranty. Without it you have a material warranty only, which covers far less than most homeowners assume.

Municipal business licence

Some Ontario municipalities require one. Not universal, but easy to ask about.

Questions worth asking

Can I see a current WSIB clearance certificate and your liability certificate of insurance?
Is this a full tear-off, or shingling over the existing layer? (Overlays are cheaper and shorten roof life.)
How much ice and water shield is included, and how far up from the eave?
Are you certified by the shingle manufacturer, and does this quote include the system warranty or only the material warranty?
What happens if you find rotten decking? What is the per-sheet price, and will you show me before replacing it?

Read the full roofers hiring guide