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Business ProfileWindow Installers in Bozeman, Montana

Western Glass Company

Listed in Bozeman 4.50 (43 reviews)

Western Glass Company

Western Glass Company provides glass services in Bozeman and the Greater Gallatin Valley. It has been in business in Bozeman for over 30 years and measures and replaces glass in insulated units.

Last Updated October 3, 2026.

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Service Area

Bozeman and the Greater Gallatin Valley.

Active Business Listing

Western Glass Company is one of 12 window installers ProsGrade lists in Bozeman, Montana.

Active
Public local listing
Listing details

9 services listed, including Windows, Insulated glass and Shower doors. Open 4 days a week. Rated 4.5 from 43 reviews.

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How This Business Compares

How Western Glass Company compares with the other 11 window installers on ProsGrade in Bozeman, using public Google ratings and review counts.

  • One of 12 Bozeman window installers on ProsGrade.

Services Covered

9 services
  • WindowsMilgard products; built-to-order options for new construction and replacements.
  • Insulated glassReplacement insulated-glass units, measured before ordering.
  • Shower doorsClear glass, Clarvista-coated glass and Therma-Glass doors.
  • DoorsMilgard patio doors in vinyl, fiberglass and aluminum; commercial metal-slab and half- or full-lite doors.
  • Specialty glassDecorative glass, pyroceramic for fireplaces and wood stoves, Starphire and Mirrorpane.
  • Acrylic and polycarbonate sheetsCut to size, drilled or made into custom shapes.
  • SkylightsVELUX brand skylights.
  • MirrorsCustom shapes and sizes; outlet or light cutouts, bevels, colors and patterns.
  • Block windowsPre-framed acrylic block, glass block and decorative-glass privacy windows; custom-sized retrofit options.

Reviews

What customers say

Two customers praised the service on small residential and custom-glass projects, and one specifically described the communication as kind and clear. A customer reported two mismeasured windows, a later delivery of the wrong window type, more than 90 days before the correct windows were installed, and dismissive responses. Other reported problems included streaking in installed glass, unanswered requests to order replacement windows and unavailable digital payments.

Customer Reviews

Zac Krohn

Would give 1.5 stars if I could due to actual technicians that did work were solid, everything beyond that was poor to horrible with this business. I rarely leave reviews, exceptional or horrible experiences. The ownership, estimator/operations lead and front desk of this company are horrible. If you would like two mis-measured windows that do not fit by 6” either side and your existing window was destroyed as it was removed with no one test fitting new window so you then get sheets of OSB and no view for your new window, hire these guys. Then 30 plus days of an OSB dark hole later they come back again with the wrong windows because someone forgot spec out single hung vs. the non-opening sheets of glass, hire these guys. 60 plus days after that you finally will get the correct windows that fit installed…….so over 90 days later and three times of opening your home up in the winter due to their mistakes, hire these guys. “When you have Western Glass Company handle your glass project, you can rest assured that we will get the job done right the first time”, literally says that on their website, completely FALSE! Shawn was consistently dismissive that it was Western glass fault instead he would blame the window manufacturer. Also dismissive that we as customers were put out at all, would defensively blame anyone else or downplay. Unprofessional and terrible customer interactions. Zero acknowledgement financially that the job was a complete failure when we got final bill. Actually had the audacity to charge $130 over quote. When confronted about charge, Bill I assume the owner, says he did not overcharge and that I got the windows I paid for at the end of it so you pay what you were quoted (and apparently $130 extra just rub some salt in there)!! Yup Bill pretty sure I didn’t pay you to screw up ordering/measuring windows two separate times and 90 plus days later to finally get it right then charge me more than the quote and be rude to my wife and I. They could have been professional and made it right, complete opposite. Zero acknowledgement that this was a train wreck, acted like normal business operations…….which after dealing with overhead of this company for well over three months that is what you are getting.
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Heidi Makoutz

I had an excellent experience with Western Glass on a small residential window replacement and storm window replacement - I had to search around for help as there aren't many companies doing residential - at least not on small scale. I went to their shop and from start to finish the service and communication was kind and clear. So helpful to have window replacement complete on our home before colder weather comes our way! I highly recommend them.
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lynn vega

I have used Western glass on a couple of small projects and I can’t speak highly enough of the customer service given by Jim and his team. Even in the busiest of times for the construction industry in Bozeman, Jim has given my small jobs his full attention. He walked with me through the shop to select a particular piece of antiqued glass for a custom mirror. On another occasion he replaced a piece of custom glass for a kitchen cabinet free of charge. Western Glass installed wire mesh on another set of bar cabinets and it looks amazing. Lastly, and this shows how kind Jim is, I stopped by to drop off cabinet doors and I had a newly purchased lilac tree in the bed of our pickup. I mentioned casually that I was worried about the wind doing damage to the tree on the ride home and Jim went in the back and got a large sheet of butcher paper and a stapler and he wrapped the tree to protect it for the ride home. This is a perfect example of small town feel customer service in a not so small town. thank you Jim and Western Glass I’m a big fan!!
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Meghan L

Western Glass does not accept digital payments as well as they install faulty product. I decided to go with them initially due to cost savings but will end up paying more in the end. The picture attached is of the glass that they installed a year ago that now has huge streaks running up and down.
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Rodney Irwin

Was referred to them by the milgard window company since they don’t stand behind the lifetime warranty, original purchased the windows, frames are cracking, inside glue between pain is dripping between the glass and looks horrible, Milgard sent the measurements to bill to order the windows no reply, I’ve called and left messages to order the windows no reply. Sent bill emails no reply. Don’t buy Milgard and I would pass on this window company if you can, but in this monopoly of a valley not many options. Lowes or Home Depot.
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Frequently Asked Questions

How long is the lead time for Western Glass's insulated glass orders?

Standard insulated units have a 5–7-business-day lead time; orders may take longer depending on the window brand and glass preferences. After the glass arrives, it is inspected before installation is scheduled.

Can Western Glass measure windows for an estimate?

Yes. It can arrange a visit to measure and prepare an estimate.