Rated on 2 platforms — Google 5.0, Facebook 5.0; ratings agree

Les Entreprises OSR Collister Inc - Couvreurs Toitures Chambly serves Chambly, QC and the surrounding area. Ask its customers and you’ll hear about professionalism, workmanship, tidiness. It carries an N49 Trust Score of 58.7/100 across our 10-factor review. Mentions 7 service areas on home page (e.g. laval, montreal, montréal, ottawa, québec).
5★ from 42 Google reviews
Rated on 2 platforms — Google 5.0, Facebook 5.0; ratings agree
Has a working website
Not in the Google Maps local top results
~4.2 years on Google Maps (from total-reviews ÷ monthly rate)
Not on Three Best Rated / BBB
~48 reviews across 2 platforms
Mentions 7 service areas on home page (e.g. laval, montreal, montréal, ottawa, québec)
On 1 extra platforms; reachable by website, phone
1 platforms linked: Facebook · ~6 Facebook reviews
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By Geneviève H on Apr 28, 2026 Verified by Google

We are very satisfied with the work of the entire team. Everything went perfectly: they demonstrated great professionalism from start to finish, and the site was impeccably tidy at the end of the day.
Special mention to Philippe for the careful installation of the tarps around the house: meticulous work carried out with great care. In addition to being very professional, he is also very kind.
Hats off to the whole team! We wish you an excellent 2026 season 😊
By Kim Laplante Vandal on Apr 19, 2026 Verified by Google

Very satisfied with the work done by OSR in such a short time and the efficiency of the team; they left the grounds very clean as well, which was my biggest fear. Really happy!!
By dany nadeau on Apr 19, 2026 Verified by Google

I highly recommend this company for your roofing needs. The team is efficient, organized, and above all, very clean. My roof was redone very quickly. If anyone asks me, I say OSR without hesitation. Good job! 👌🤘🏻
By dany nadeau on Apr 19, 2026 Verified by Google

I highly recommend this company for your roofing needs. The team is efficient, organized, and above all, very clean. My roof was redone very quickly. If anyone asks me, I say OSR without hesitation. Good job! 👌🤘🏻
By Éric Charpentier on Mar 31, 2026 Verified by Google

Wow! What service! I highly recommend it! Courteous, knowledgeable, and with solid advice! Don't hesitate to contact Philippe!
By Éric Charpentier on Mar 31, 2026 Verified by Google

Wow! What service! I highly recommend it! Courteous, knowledgeable, and with solid advice! Don't hesitate to contact Philippe!
By Etienne Simard on Mar 23, 2026 Verified by Google

After meeting with several roofing companies, OSR (with Olivier as team leader) clearly stood out as our favorite. Their honesty, transparency, and excellent value convinced us.
The work was completed in a single day, and we are very satisfied with the result. A very positive review for this company—I recommend them without hesitation!
By Etienne Simard on Mar 23, 2026 Verified by Google

After meeting with several roofing companies, OSR (with Olivier as team leader) clearly stood out as our favorite. Their honesty, transparency, and excellent value convinced us.
The work was completed in a single day, and we are very satisfied with the result. A very positive review for this company—I recommend them without hesitation!
By Patrick Dufresne on Oct 10, 2025 Verified by Google

Excellent service, speed, and excellent product quality. They ensure our satisfaction even after installation.
By Patrick Dufresne on Oct 10, 2025 Verified by Google

Excellent service, speed, and excellent product quality. They ensure our satisfaction even after installation.