Contract Rating

Guardian Glass Ltd

Window & Door InstallerWindsor, ON

4.471 Google reviews
Hours published

Customer reviews

This business has 71 Google reviews. We show up to five of them below - read the full listing on Google before deciding.

Paul Chenier

I had a small custom glass job done for a buffet table, and Guardian Glass in Windsor absolutely nailed it. The price was surprisingly affordable, the turnaround time was fast, and the quality was perfect. It’s great to see a local shop deliver this level of service on even the small projects. Highly recommend them for any glass work—big or small.

Millie Parent

Just had a new kitchen window replaced by Anthony and Mustafa. Excellent job done. Thanks so much, love the window, very pleasant and professional!

Ryan Bilyk

Great glasswork and install on bathroom reno work. Recommended to try without a door and see if any water sprays out the enclosure and with the jets angled a bit to port side spray is near zero. Save a few bucks on install but more importantly less to clean and adjust.

KT VN

Good customer services. Clear and precise communication with client. I had them cut glasses for me on 3 separate occasions. 1 time the dimensions was wrong but they didn't fuss. They cut it smaller to the size I want without charge. If you need small glass replacements, I recommend their service.

Debbie Dufour

Thank you to Tara, for your excellent service and expertise. We are very happy with the finished job on the installation of the new mirrors to our existing fame.

Read all reviews on Google

Before you hire a window and door installer in Ontario

No provincial licence is required. Installation quality is governed by manufacturer specification and the Ontario Building Code rather than by a trade certificate.

General liability insurance and WSIB clearance

Standard checks. Window installation involves ladder work and heavy glass.

Manufacturer-trained installer status

Matters more than usual here, because most window warranties are voided by installation that departs from the manufacturer specification.

Building permit for new or enlarged openings

Replacing a window in an existing opening generally does not need one. Cutting a new opening, or enlarging one for a basement egress window, generally does.

Verify with: Your municipal building department confirms what your specific job requires.

ENERGY STAR certification for the product

Relevant if you intend to claim any efficiency rebate, which typically requires certified products and documentation.

Questions worth asking

  • Is this a retrofit or a full-frame installation? What would the other one cost?
  • How is the gap between the window and the rough opening insulated and air-sealed?
  • Is exterior capping included, and in what colour and material?
  • Is the warranty on the glass seal, the frame, and the labour - and are they different lengths?
  • Is the warranty transferable if I sell the house?
Read the full window & door installers hiring guide