Skip to content
Roof Warden

Roofing contractor

Wm. Green Roofing Ltd.

45 Dawson Rd, Guelph, ON N1H 1B1

Google average
4.7
Ratings counted
92
One and two star
4 of 92(4.3%)
Ontario median
2.9%

The first three are Google’s own figures for Wm. Green Roofing Ltd., 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

4.7
92 ratings
How the 92 ratings break down, from five stars to one
5
8188%
4
55%
3
22%
2
00%
1
44%
4.3%of these 92 ratings are one or two stars (4)

About typical — 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 4 of the one and two-star reviews we hold for Wm. Green Roofing Ltd., most recent first.

  • 1 out of 5Amber Morphy4 years ago

    Absolutely the least professional company I have ever dealt with. I waited for over six months for them to do a flat roof for me. They kept on promising me that I would be their next customer. I even received an email from them stating that they would be arriving on the morning of June 20….And five days later, they still are not here. I would never recommend this company

    Google cut this review short. The full text is on their Google profile.

    Reply from the business

    Hi Amber, as has been communicated via email and phonecalls, the foreman who specializes in your roof type has injured his back, and this has affected our schedule. We apologize for the inconvenience this has caused, and hope you can understand the situation we're in. We will be reaching out offline to work towards a solution.

  • 1 out of 5Robert and Mary McGregorEdited 4 years ago

    Terrible. Signed a contract in June to repair our roof/gutter and gave them a deposit. They did not do the job and are no longer returning our emails or calls. Nor, have they returned our deposit as requested. It is now November. No stars should be an option. We wrote this review and a reply was immediately made indicating that there were supply issues and offered to send our deposit back. It was amazing to see how quickly they responded when a negative review was received. It is now December 5 and we have still not received our deposit back. Seems they have a supply issue with their company cheques as well.

    Reply from the business

    Hi Robert and Mary, we apologize that we have not been able to locate the colour needed to complete the job - this year has been full of supply issues with many materials, including aluminum. Your deposit will be mailed back to you as requested.

  • 1 out of 5Tyson MelnichenkoEdited 5 years ago

    In response to your reply to my 1 star review: my elderly mother was cornered by Mr. Green and engaged in a shouting match on my front porch. She was shaking. How dare the owner of a company come to my door during a pandemic, get in the …

    Google cut this review short. The full text is on their Google profile.

    Reply from the business

    Hi Mr. Lubbers, we apologize that you had this experience with our company. Please give us a call to discuss what happened so we can rectify the situation. Thanks.

  • 1 out of 5Mr Joshi9 years ago

    Contacted them many times to come and give me a quote. They failed to return my call everytime. The secretary said she will have someone call me ASAP, its been 4 days still no point of contact has been made to me. Im glad im not going with them to get my roof done.

    Reply from the business

    Hi Mr. Joshi, We're certainly very sorry that you had this experience with us, and will do whatever we can to make sure it doesn't happen again. Regards.

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.

  • professional crew22
  • quick response14
  • polite crew6
  • pleasant staff4
  • responsive staff3
  • ice dam repair2
  • clean work site2
  • competitive quote2
  • quality roofing2
  • reliable team2

Other reviews we hold

14 more of the 83 reviews we hold text for, most recent first. We do not hold every review Google has.

  • 5 out of 5Steve Chomyc5 days ago

    We could not be happier with our new roof. The 50 year GAF warranty is comforting as well. The crew were very professional and Arnie the lead is a good communicator and was responsive to our questions and any concerns raised. Would not hesitate to recommend Wm Green Roofing.

    Reply from the business

    Thank you for the great review Steve!

  • 5 out of 5Ura Dufusa week ago

    Ura Dufus (AKA Colleen Hill) Thank you for the great work on my roof. Jesse was great, listened to my concerns regarding issues with my roof and the crew did the job efficiently and it looks great

    Reply from the business

    Hi Colleen, thanks for the feedback, we're happy you love your new roof!

  • 5 out of 5Jacqueline Glaspell4 weeks ago

    BEST SERVICE EVER! I had an excellent experience with my FLAT ROOF- very hard work to have completed - BEWARE of who you get to do your work- it MATTERS! THIS IS YOUR COMPANY! If you are wanting an accountable and reliable service this …

    Google cut this review short. The full text is on their Google profile.

    Reply from the business

    Thank for the awesome review, we are happy you love your new roof!

  • 5 out of 5Garry Helsby4 weeks ago

    We recently had an eavestrough repair completed by Wm Green Roofing and it was an absolutely great process from my beginning contact with the office, the first visit with Jack, his follow up on the men coming out, and the completion of the work, which was outstanding. We could not be more pleased with everything that was done, and would highly recommend Wm Green to anyone needing any roofing, eavestrough or other related projects completed on their home. Thanks Jack and to your crew for taking such good care of us. It was a pleasure.

    Reply from the business

    Thanks for the great review, Garry!

  • 5 out of 5Jim Prigionea month ago

    William Green roofing did an amazing job on our building. From the beginning of the process to the conclusion Bryce was a pleasure to deal with. The work site was always left clean. They worked around our schedule as to cause the least …

    Google cut this review short. The full text is on their Google profile.

    Reply from the business

    Thanks Jim, we appreciate this great feedback!

  • 5 out of 5Rosemary Waltona month ago

    Prompt, professional and very affable to deal with. I highly recommend.

    Reply from the business

    Thanks for the great review!

  • 5 out of 5Tammy Hayesa month ago

    Appreciated their professionalism leading up to our commercial project start date. Bryce and his team at Wm. Green were accommodating to our needs for scheduling as we are a childcare with safety concerns that needed to be addressed when working during operating hours. Bryce was very accessible to communicate with. Subs trade working on metal roof on our building at the same time and hired through Wm Green, would definitely NOT receive a positive review. (smoking while working on roof, not tied down, foul language, constant smoking breaks at playground gates while children playing outside). Please note Wm Green NOT responsible for this sub trade other than to consider their professionalism being somewhat of a reflection on them possibly.

    Reply from the business

    Hi Tammy, thank you for the great review, and for the feedback on the metal roofing crew - this will be passed along and addressed.

  • 5 out of 5Julie Mandersona month ago

    Excellent service from Wm Green Roofing. I experienced a leak in my roof, caused by an ice buildup. Jesse was extremely professional and responsive. He deployed a team to remove the excessive snow on my roof. The issue was resolved very quickly. All of my dealings with Wm Green Roofing were very positive. Great service, thanks!

    Reply from the business

    Thank you for the great review!

  • 5 out of 5Leanne Kay2 months ago

    We experienced an "ice dam" in January. Wm Green Roofing kept us on their books until the weather was suitable and repaired the roof leak in May. Jack, Paul and Dave were very professional and did a great job, leaving the work site tidy. We would highly recommend Wm Green Roofing.

    Reply from the business

    Thank you Leanne!

  • 5 out of 5Shane Reinhart2 months ago

    We’re really happy with how our roof looks. The team was punctual and cleaned up the area after they were there. Dan and Renzo were communicative and accommodating with our schedule. We had a great experience.

    Reply from the business

    Thanks for the great review Shane!

  • 5 out of 5Chris Hale3 months ago

    Great workmanship!

    Reply from the business

    Thank you!

  • 5 out of 5Jessica Harrison3 months ago

    Great service! New roof looks wonderful, fair prices, excellent staff - very tidy too!

    Reply from the business

    Thank you for the great review!

  • 5 out of 5Mary Faustino3 months ago

    Writing ⭐⭐⭐⭐⭐ I had a fantastic experience with Wm. Green Roofing from start to finish. The entire process was incredibly smooth—getting a quote was quick and straightforward, and everything carried through just as easily all the way to the completed roof. Jesse was an absolute pleasure to deal with. He was responsive, professional, and always available to answer questions or provide updates, which made the whole experience stress-free. The roofing crew also deserves a lot of credit—they were kind, respectful, and clearly very skilled at what they do. They worked efficiently and left everything clean and tidy when the job was done. I wouldn’t hesitate to recommend Wm. Green Roofing to anyone looking for quality work and great service!

    Reply from the business

    We are happy to hear it, thank you!

  • 5 out of 5Dave Earley3 months ago

    Used Wm. Green for roof repairs at our shop/warehouse when we had a water leak in high traffic area. They responded within a couple hours and looked after the issue quickly. Friendly staff, easy to deal with and take their time. Would use them again no question!!

    Reply from the business

    Thank you for the great review!

Other roofers in Guelph

Ranked by how many ratings Google has counted.

Other roofers we list in Guelph
Roofing contractor
Hy-Grade Steel Roofingmetal roof, steel roof, professional crew4.4253 ratings13.8% one and two star(855) 494-7233
Sambor Roofingsiding, eavestrough replacement, soffit replacement4.6204 ratings8.8% one and two star(519) 822-9393
Empire Exteriorseavestrough replacement, fascia installation, siding repair4.8122 ratings4.9% one and two star(519) 265-7663
The Roof Whispererflat roof, roof repair, skylight replacement4.773 ratings6.8% one and two star(519) 804-3467
Webcon Roofingvalue, professional crew, roof replacement4.573 ratings12.3% one and two star(519) 766-8840
JMN Roofingprofessional staff, family business, leaky roof repair5.066 ratings0% one and two star(226) 979-0676

All roofers in Guelph →

Where this page comes from

Every figure above is Google’s, captured on 24 September 2026. The star average and the 92 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 92, of which 83 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.