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Roof Warden

Roofing contractor

Dave Merkley Roofing Ltd

51 Rosewood Ave, Guelph, ON N1H 5Z8

Google average
4.5
Ratings counted
31
One and two star
4 of 31(12.9%)
Ontario median
2.9%

The first three are Google’s own figures for Dave Merkley 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

4.5
31 ratings
How the 31 ratings break down, from five stars to one
5
2581%
4
26%
3
00%
2
13%
1
310%
12.9%of these 31 ratings are one or two stars (4)

Much 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 3 of the one and two-star reviews we hold for Dave Merkley Roofing Ltd, most recent first.

  • 1 out of 5Jodi McDuffe10 years ago

    I wish there was a less than 1 star. I had this company redo the roof of my house, and while the roofers were pleasant enough, I found them playing with my dog, sitting in my lawn chairs under my trees, or in their truck, the job could …

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

  • 1 out of 5Jimmy Lewis11 years ago

    I was looking for a roofer, I called Merkley Roofing on July 30th 2014. Followed up on Aug 6, I was told some one would call back. Received a call and was told could not find my house. I passed the information but never heard from then again. So I called back on Aug 15th and my last call Sept 4th. The lady that takes the messages always says the same thing. We'll call you back. So after 6 weeks I have now decided that I can't trust a company that can not even return a simple phone call. I told them if they don't want to do the job, tell, so I won't loose my time waiting for them. There is plenty of roofer with good reference. It is unfortunate that Dave Merkley doesn't take his business seriously and can even return a simple phone, If they have so much work then they should advise the people calling. A company like this doesn't deserve my business. Imagine if a simple phone call is too much what kind of service would you get on your roof.

  • 1 out of 5JWMA Hurst12 years ago

    So I go online this morning in search of a roofing company to come and fix some shingles the high winds damaged yesterday. I find many results and decide to call Dave first, since the website was well organized, BBB accredited and I got a good sense of professionalism about the company. Well, my good sense faded quickly when Dave called me back and said that they are very busy, since calls have been coming in all morning. OK. I understand that. It's the next thing he said that got me. He asked me how old my roof was. I told him it was 3 years old, to which he replied, well, I'm too busy, sorry. I never asked for him to come right away! Therefore this lead me to believe that he was after the bigger jobs, and rejected anything else. Since my roof is only 3 years old, there is no way that the whole roof would need to be redone, therefore I was rejected. Most likely if my roof was 10 years old or older, he would consider the job, since there would be a chance that he could convince me to get the whole roof redone. My opinion is that this company is money hungry and does not treat all customers the same way.

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.

  • reasonable pricing5
  • crew5
  • cleanliness4
  • pleasant staff3
  • budget3
  • efficiency3
  • clean site2
  • response time2
  • work quality2
  • responsiveness2

Other reviews we hold

14 more of the 23 reviews we hold text for, most recent first. We do not hold every review Google has.

  • 5 out of 5Scott Fergusona year ago

    Had Dave and his team recommended by a co-woker couldn't be happier. From start to end they communication was great, very helpful with helping me pick products and color, and came in at a fair price, they kept the yard a driveway clean. I would use then again and recommend them. Thanks

    Reply from the business

    Thank you for the 5 star review and recommendation!

  • 5 out of 5Bruce Duggana year ago

    Amazing experience! So glad I chose Dave Merkley Roofing. Extremely professional, friendly and efficient. Job was completed on time and under my budget with an outstanding finished product. Would recommend them to any homeowner looking for top quality at a very reasonable price.

    Reply from the business

    Thank you for taking the time to share your experience and we are so glad we got to work together on your roofing project. We appreciate the business and the 5 star review!

  • 5 out of 5clowdy4a year ago

    Very good business to work with. Arrived when they said they would. Completed in one day. Competitive pricing. Very good at what they do. What's not to like.

    Reply from the business

    Thank you for the review, it was a pleasure!

  • 5 out of 5wendy schneider2 years ago

    We highly recommend Dave Merkley Roofing! They had shingled our home years ago, and it is still perfect. We needed to add some new vents in the roof due to remodeling bathrooms- their fellow was prompt, courteous, efficient and left the …

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

    Reply from the business

    Thank you for sharing your experience it is appreciated!

  • 5 out of 5Jim Pratt2 years ago

    Wow - what a hard-working and professional crew! We had an old, crumbling, and dangerous chimney taken down, some decking replaced, and a complex roof stripped and shingled, and the site cleaned up, all in a day and a half. The new roof looks great and no worries about leaks or a wobbly chimney. Highly recommended.

    Reply from the business

    Thank you for the 5 star review, we appreciated it! It was pleasure working with yourself and Kelly, all the best.

  • 5 out of 5Angela Sealy2 years ago

    Thank you for a job well done. The pricing was very reasonable. Roofers came on time and left my property clean.

    Reply from the business

    Thank you for the 5 star review it is much appreciated, as is your business!

  • 5 out of 5Robert MEdited 2 years ago

    Following our recent high wind storm I called the company and Dave said they were extremely busy with a high volume of calls with damaged roofs. No promises but it could be over a week before they could get to me. Well I just wanted to take the time to inform you that your staff were here this morning which was a very pleasant surprise since you had so many calls to service. The three guys were terrific and got the job done without any delay and were very professional and pleasant to talk with. They were up onto the roof very quickly and without delay assessed the damage and repaired in it very short order. I think it's important to comment on a job well done in today's world. People sometimes are very quick to jump on the criticism bandwagon and equally as quick to forget compliments and appreciation when a job is well done. I know you said it could be next week before you got to my situation of ripped off tiles in the windstorm because of the high call volume but you got your staff here speedily this week. So you and your staff deserve a great round of thank you's and appreciation for getting the job done so quickly and efficiently. I would not hesitate in recommending you and your company to anybody in the future.

    Reply from the business

    Thank you for taking the time to give us a review, we appreciate and glad you had a great experience with us.

  • 5 out of 5joe geremia3 years ago

    My 92 year old dad was very pleased with the emergency roof patch and full roof replacement resulting from a fallen tree. The insurance claim process was painful. Merkley roofing was responsive and the clean up was very thorough. The …

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

    Reply from the business

    Thank you for reaching out to let us know that you and Mario were happy with the service provided. We appreciate your feedback, all the best!

  • 5 out of 5Marcel Trost3 years ago

    Dave Merkley Roofing recently quoted (very detailed), then re-roofed our workshop building. The whole process from quoting, answering questions, timing, roofing and clean-up was all very professional, on time and on budget. Jackie is extremely customer care oriented and the roofing team was friendly and efficient. I was impressed, that Dave Merkley Roofing is an equal opportunity employer - KUDOS. Clean-up was carefully done with strong magnets and even picking up small pieces of backing plastic stripping and shingles. Overall five star rating. Will gladly recommend them and use their services again. Thank you.

    Reply from the business

    Thank you for the 5 star review :)

  • 5 out of 5Debbie denHoed3 years ago

    Fast, efficient, pleasant to deal with, great communication, and cleaned up well when finished.

    Reply from the business

    Thank you so much for your 5 star review of our service, we appreciate it! It was a pleasure to work with you :)

  • 5 out of 5Bill Seegmiller3 years ago

    This is the second roof that we have done with this company. Very good job both times. Very professional crew, and service. Did not rush the job, and took the time with every detail. Very careful to clean up at the end of each day. I would highly recommend them anytime.

    Reply from the business

    Thank you for the 5 star review Bill, it was a pleasure working with you again! Your business is appreciated :)

  • 5 out of 5Sid Polstra4 years ago

    I hired this company for roof repair and was told they were very busy and be at least a month before they could come. I asked if they could somehow squeeze me in sooner because I had a tarp on the roof and was nervous about another storm. …

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

    Reply from the business

    We're glad we could accommodate you and put your mind at ease. Thank you for the 5 star review, ill be sure to pass along your kind words to our crew.

  • 5 out of 5Jessie Shen4 years ago

    They did a very good job for replacing my roof. Organized, considerate and work hard. Very nice and helpful guys. Reasonable price. Highly recommend!

    Reply from the business

    Thank you for your 5 star review Jessie, it was a pleasure working with you :)

  • 5 out of 5Deutschy4 years ago

    The staff and crew were great to work with. Quality options and very responsive to our needs. There’s no need for us to get a roof every year but we sure made the right decision when when we needed one.

    Reply from the business

    We are so glad that you are happy with the service you received, thank you for taking the time to share! Much appreciated :)

What Dave Merkley Roofing Ltd 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

    “…we offer a five-year workmanship warranty, to go along with the…”

  • States a founding year

    “…Roofing Company in Guelph In business since 1986, Dave Merkley Roofing Ltd. provides…”

  • Free estimates

    “…For a free estimate, information on the types of products…”

  • Mentions the BBB

    “…Chamber of Commerce Accredited with the Better Business Bureau Your Roof, Our Priority We understand…”

Their site also states: insured.

Other roofers in Guelph

Ranked by how many ratings Google has counted.

Other roofers we list in Guelph
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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
Wm. Green Roofing Ltd.professional crew, quick response, polite crew4.792 ratings4.3% one and two star(519) 822-6414
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

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 31 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 31, of which 23 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.