Stonemills Roofing

Customer reviews

This business has 3 Google reviews. We show up to five of them below - read the full listing on Google before deciding.

Sam Desjardins

Mar 25, 2026

Highly recommend Stonemills!

Bram Broadcastle

Oct 30, 2025

Great company that does great work! Adam and Matt will take care of any commercial roofing project that you have effectively and efficiently

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 Stonemills Roofing 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