Roofing contractor
William Roach Roofing
621 Mack St, Cornwall, ON K0C 1P0
- Google average
- 4.7
- Ratings counted
- 24
- One and two star
- 2 of 24(8.3%)
- Ontario median
- 2.9%
The first three are Google’s own figures for William Roach Roofing, read on 24 September 2026; the share is of every rating Google has counted, not of the review texts on this page. The median is ours — the middle figure among the Ontario roofers we list with enough ratings to compare.
Rating breakdown
| 5 | 22 | 92% | |
|---|---|---|---|
| 4 | 0 | 0% | |
| 3 | 0 | 0% | |
| 2 | 0 | 0% | |
| 1 | 2 | 8% |
Higher than most — the typical roofer in Ontario sits at 2.9%. A higher share is a reason to read the critical reviews below, not a verdict.
The critical reviews
The one and two-star reviews, first. These are what a star average hides, and they are the reason this page exists.
All 2 of the one and two-star reviews we hold for William Roach Roofing, most recent first.
- 1 out of 5Aji Josea year ago
Faulty installation. Wasted money. Update - Apparently the owner asked for proof of business with me. The work was done a little while ago and I missed to give the review. His work started leaking on the next day when it rained. When asked …
Google cut this review short. The full text is on their Google profile.
Reply from the business
We have not done business with you, please provide proof of your claim..
- 1 out of 5jordan flaro5 years ago
Took 2 weeks to return my email asking for a quote. Then he finally came to measure my roof for an estimate, I was told the estimate would be emailed to me in 2 days...it's been 2 weeks and haven't recieved an email...
What reviewers keep mentioning
Topics Google extracted from this business’s reviews, with how many mention each. These are words that appeared in reviews, which is not the same as a service the business sells.
- leak3
- roof repair3
- metal roof upgrade2
Other reviews we hold
6 more of the 8 reviews we hold text for, most recent first. We do not hold every review Google has.
- 5 out of 5noel marsolaisa year ago
Very professional and quality work
- 5 out of 5Joan Ga year ago
Great job to William Roach and his team for fixing my leaky roof. Very efficient and polite and professional 😊 …
Google cut this review short. The full text is on their Google profile.
- 5 out of 5Joseph A.R. Godarda year ago
Hey great many thanks to William Roach thank you for repairing my roof and siding.
- 5 out of 5Richard Godarda year ago
Great job by William Roach on my metal roof thank you so very much.
- 5 out of 5george samplea year ago
William Roach Roofing were very professional from start to finish. I chose them not because of the price but as William had said in his add that said his price would probably be higher than the others but his quality of the end product …
Google cut this review short. The full text is on their Google profile.
- 5 out of 5Ken GreenEdited a year ago
I contacted William Roach 3 years ago to do a repair to some roof trusses on a home we had just purchased and that the home inspection noted that would need to be fixed to prevent issues in the future. We were so impressed with William on his Professionalism in doing the repair we decided to get him to quote on a new roof when we had a leak around our skylight. After getting several quotes we chose to use William based on his quote and previous work for us. We also chose to upgrade to a Metal Roof, price difference was reasonable considering the life of a metal roof over ashphalt shigles. During the removal and install of new roof William and his crew maintained a clean and tidy work enviroment, no mess around our home at the end of every work day. William and his crew came through again with an amazing new metal roof and new skylight, the finished project got a lot of great comments from our neighbours. We would highly recomend William for your next roof project. Ken
The latest post from this business
Posted by William Roach Roofing to their own Google profile 3 years ago. Their words, not ours.
Jun 28, 2026
What William Roach Roofing says about itself
Taken from the business’s own website. We have not checked any of it. These are quotes, not credentials — a roofer writing “licensed and insured” on their homepage is not evidence that they are.
Warranty offered
“…Satisfaction Guaranteed Once your roofing project is…”
States years in business
“…roofing contractor in Cornwall with over 20 years of service and 27 years of experience…”
Free estimates
“…Contact us online for a free quote. William Roach Construction is a…”
Other roofers in Cornwall
Ranked by how many ratings Google has counted.
| Roofing contractor | Google average | Ratings counted | One and two star | Contact |
|---|---|---|---|---|
| AluPro Eavestrough, Gutter, Gouttière Serviceseavestroughing, personable staff, cleanliness5.055 ratings0% one and two star(343) 575-3629 | 5.0 | 55 | 0%0 of 55 | (343) 575-3629 |
| Poirier D Roofingprofessional crew, roof replacement, clean up5.041 ratings0% one and two star(613) 527-5113 | 5.0 | 41 | 0%0 of 41 | (613) 527-5113 |
| George Larin Sheet Metalpeople, family5.019 ratings0% one and two star(613) 932-6907 | 5.0 | 19 | 0%0 of 19 | (613) 932-6907 |
| First Choice RoofingRoofing contractor3.77 ratingstoo few to compare(613) 937-0461 | 3.7 | 7 | —too few | (613) 937-0461 |
| Baumann Accurate Roofingcleanup, respectful crew, prompt work5.05 ratingstoo few to compare(613) 662-1426 | 5.0 | 5 | —too few | (613) 662-1426 |
| Eagle Guard Roofingprofessional team, quality of work5.03 ratingstoo few to compare(613) 870-1428 | 5.0 | 3 | —too few | (613) 870-1428 |
Where this page comes from
Every figure above is Google’s, captured on 24 September 2026. The star average and the 24 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 21, of which 8 have any text — and it is not everything Google shows.
Roof Warden does not verify licenses, bonds, insurance or workers’ compensation cover, and nothing on this page should be read as though we had. Confirm those directly with the contractor and with your state or provincial licensing body before you hire anyone.