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Roof Warden

Roofing contractor

LM Exteriors

113, 115 Cushman Rd #5, St. Catharines, ON L2M 6S9

Listed under St Catharines, ON

Google average
4.7
Ratings counted
139
One and two star
12 of 139(8.6%)
Ontario median
2.9%

The first three are Google’s own figures for LM Exteriors, 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
139 ratings
Google’s profile shows 138
How the 139 ratings break down, from five stars to one
5
12691%
4
11%
3
00%
2
43%
1
86%
8.6%of these 139 ratings are one or two stars (12)

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.

8 of the 11 one and two-star reviews we hold, most recent first.

  • 2 out of 5Andrew M.a month ago

    Product is beautiful. When we eventually got it. And when they came back to fix the glass. Customer service is atrocious.

  • 2 out of 5Andrew Wears2 months ago

    Go over your estimate with a fine toothed comb!! If you’re having them remove any old windows or make any smaller, be prepared for a crap job on the siding, didn’t bring the right size and had to scab it all together. Who uses screws to …

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

  • 2 out of 5Sylvain Leblanc4 months ago

    The installation was completed three weeks ago, but the project remains unfinished from a service standpoint. I had to purchase my own deadbolt at a local hardware store because the provided one didn't fit, and I was promised a reimbursement. I am still waiting for that check to arrive. Once the payment is settled, I’d be happy to update this review.

  • 1 out of 5Andrew Carr5 months ago

    LM Exteriors was extremely difficult to work with on my purchase of front and back doors to my house.  I would not recommend their services to anyone based on my experience.  LM was very happy to respond to any and all inquiries I had for …

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

    Reply from the business

    Hi Andy, thank you for your feedback. We are sorry your door leaked after the initial installation and recognized this issue after installation. However, we did address this concern, fixed the issue and do have a completed sign off from our service technician that you were satisfied with the work completed on your doors. As far as a "host" of issues; we were never aware of anything until you mentioned these claims today. It only took us 3 months to service you because you were unresponsive. We had made several attempts to contact you both via email and by phone in the leading months prior to the service date to set up a date and time to fix the issue. Instead of waiting for us to come, you tried to reverse your payments with the credit card company. We don't know what your intentions are with this post, but we do not respect/tolerate bullies. We hope you have a pleasant rest of your day.

  • 1 out of 5Casey Aronson5 months ago

    Customer service has been terrible. For lifetime warranty, you try to call/ address a situation and they don't get back to you. But then they call you asking you about installing more new windows. I feel its their way asking you for more money, A. Before you even finish paying for what you have now. (Clearly these things aren't cheap) B. They haven't even gotten back to you when you called about something that needs to be fixed or looked at.

  • 1 out of 5Brendan5 months ago

    Work done was acceptable, customer service on the other hand is atrocious. Have been called 3 times already asking me to pay for more services, called and asked someone to come look at my door that they installed and haven't heard back for 3 weeks, until now when I got another solicitation for more money

  • 2 out of 5Foxafied6 months ago

    My windows were okay but the sales manager jason was very rude and accused me of wasting their time when I needed to reschedule.

    Reply from the business

    Thank you for your feedback. We take concerns like this seriously, however we are unable to find any record of this situation. Please contact our office directly so we can review the details and assist you.

  • 1 out of 5Lit King6 months ago

    This company installed 30,000 worth of windows for me under their previous name landmark home solutions the main reason I chose them was their life time warranty, I have called multiple times emailed EVERYTHING! and haven't heard a peep, I will be looking into litigation and am posting this as a buyers beware warning

    Reply from the business

    Thank you for your review. However, LM Exteriors is not affiliated with Landmark Home Solutions and we did not complete the project you are referencing. It appears this review may have been posted on the wrong company page. We kindly ask that you direct your concerns to the appropriate business.

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.

  • knowledgeable staff40
  • door replacement7
  • fair pricing6
  • clear explanations6
  • punctual installers4
  • window demo4
  • no pressure sales4
  • informative staff4
  • patio door installation3
  • quality windows and doors2
  • window and door quotes2

Other reviews we hold

14 more of the 127 reviews we hold text for, most recent first. We do not hold every review Google has.

  • 5 out of 5Janet McGibbon5 days ago

    It was a great experience with this company from start to finish. We love the 2 new doors they installed for us, Entrance door as well as a Patio door. They stay on time Schedule and work was done quick and professional done. Would certainly recommend this Company and would do business again with them, when the need arises

  • 5 out of 5Peter Dewara week ago

    Rear basement windows were replaced. Very good job done and they look fantastic.

  • 5 out of 5Michael Raleigha week ago

    Amanda Baldwin did an outstanding job of explaining the fullness of the products and expertise of your operation. I hope to be able to continue buying from the best!

  • 5 out of 5Greg Mca week ago

    Guys were very quick and professional. Tidied up and removed all of the old windows before leaving. Would not hesitate to use them again.

  • 5 out of 5Julia AnsellEdited a week ago

    They did an excellent job of installing the new windows and cleaned everything up not a sign of dirt or debris also explained how the windows work

  • 5 out of 5Michael Patrick Boudreau3 weeks ago

    Amanda is awesome explaining the whole process from installation to glass.thanks very much.

  • 5 out of 5Brad Morrisona month ago

    All i can say is very knowledgeable young lady very easy to talk and glad to have had her as the person to walk me through this procedure it was all a pleasure

  • 5 out of 5Janet Mersinidisa month ago

    Rolf is the gentleman l spoke with when l ordered my windows,,,he was so kind and patient explaining everything to me. And l appreciated the fact that he told me l could contact him if I have any questions. Being a widow and on my own never having the experience of doing these things , his help meant a lot! And of course Mark who installed the windows was amazing! Avery hard worker and funny too!😁

  • 5 out of 5Judy Hursta month ago

    The whole team from start to finish were very friendly and trustworthy. The installers worked hard to get the job done in one day and always had time to answer questions and clarify the process. Thanks so much!

  • 5 out of 5Wanda Gouleta month ago

    The crew at LM Exteriors that installed my windows were very easy to talk to and work with. They were very professional and did a great job. They were able to include a last minute addition when I changed my mind about one window and double checked all measurements manually. They were able to keep my oak window frames in tact and delt with an unfortunate ant invasion like professional exterminators. They were also able to repair some damaged dry wall under two windows as part of our agreement. I highly recommend them for windows and installation.

  • 5 out of 5Paul LatinoEdited a month ago

    Thanks to Paul L Sales Rep Love my Windows!

    Reply from the business

    Thank you Paul!

  • 5 out of 5Kris StahlmanEdited a month ago

    L&M and its staff Jason, Chris, and DeShawn, did an excellent job replacing our windows. They were courteous and communicative. I also noticed after they left they that did a few extra touch ups that I wasn’t expecting. I’m very grateful for their conscientiousness and their professionalism. Thank you Rolf, for coordinating all of this and for the great price on ten new windows! May God continue to bless everyone at L&M.

  • 5 out of 5beverly beaupriea month ago

    We just purchased LM exterior windows from Peter Lalonde who explained the product thoroughly and offered us an excellent investment. We look forward to sWeeeing our new windows installed.

  • 5 out of 5Lisa MacLarena month ago

    Great job, excellent product and installation and if I could it would be 6 stars Highly recommend able. Thanks to the crew!

What LM Exteriors 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

    “…quality products and strongest warranty in the market. Click below to learn a…”

  • States years in business

    “…We have over 35 years of home renovation experience with…”

  • States a founding year

    “…and more Remodeling Canadian homes since 1987 Get a Free Estimate 1-844-988-2400 LM…”

  • Free estimates

    “…Canadian homes since 1987 Get a Free Estimate 1-844-988-2400 LM Exteriors -…”

Other roofers in St Catharines

Ranked by how many ratings Google has counted.

Other roofers we list in St Catharines
Roofing contractor
Niagara RoofMasters | Eavestrough and Roofing Niagarainformative staff, shingle installation, thorough inspection4.8367 ratings6.3% one and two star(647) 277-4983
Ace 1 Quality Roofing | Siding, Eavestroughs- Niagara Fallsprofessional crew, competitive pricing, shingles5.0254 ratings0.4% one and two star(289) 219-1665
AJT Roofing and Contractingprofessional crew, honest advice, eavestroughs4.9217 ratings1.4% one and two star(905) 931-3121
JD Roofing Inc.quick response, skylight replacement, shingle selection4.992 ratings3.3% one and two star(905) 818-1336
Niagara RoofMasterspersonable staff, curtesy, eavestrough replacement4.875 ratings4.0% one and two star(647) 277-4983
Guenther Metal Roofingmetal roof installation, beautiful roof, quick process5.060 ratings0% one and two star(289) 213-7257

All roofers in St Catharines →

Where this page comes from

Every figure above is Google’s, captured on 24 September 2026. The star average and the 139 ratings behind it are counted by Google across all of its reviews. The review text on this page is a sample — we hold 139, of which 127 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.