Retrofit, Replacement & New Construction Solutions

Commercial and Residential Windows and Doors.
We believe in increasing your homes energy efficiency while providing the best quality work and great customer service throughout the entire process of any project, big or small.

About Us

Over 45 years of experience

Our longevity illustrates our commitment to you and the industry. We are a glass company that specializes in replacement glass for hi-rise, mid-rise, and apartment house windows. With more than 45 years experience in the building industry we would be pleased to be part of your green plan. Call us today.

Family Owned and Operated

We are proud to be dedicated to our client’s best interests, it’s as if we’re family. What’s important to you is important to us.

Serving the Kitchener, Waterloo, Cambridge, Guelph and surrounding areas!

We’re able to meet the needs of customers from all over South Western Ontario! We’ve completed projects in Cambridge, Waterloo, Kitchener and Guelph but it doesn’t stop there! Give us a call.

Featured Services

Glass Replacements

We keep you warmer in the winter and cooler in the summer. Our glass options will substantially lower heat loss that is experienced during the winter and will lower the amount of heat from the sun that enters through the windows during the summer months decreasing cooling costs.

Thermal Sash Inserts (TSI) ™

Designed in house incorporating the best insulating glass options and top quality exterior vinyl sash material for best resistance to thermal transfer. No more foggy or icey windows!

Mirrors & Showers

For the builders and renovators – custom or standardized 10mm or 12mm heavy glass shower enclosures and beveled mirrors, polished edge mirrors, vanity or mirrored walls. Made to measure and standard sizes available.


Why choose us?

Quality Service

Expertise, experience, and knowledge enables us to provide top quality work and peace of mind for our clients! We ensure all of installers are fully trained and equipped for the project at hand!

Cost Savings

By implementing our strategy for decreasing energy consumption we enable building managers and condominium corporations to realize annual cost savings. With our solar control glass options, we can decrease energy consumption while dramatically increasing comfort levels. Which also includes the ability to save furniture, draperies and flooring from the damaging UV rays of the sun.

Customer First

From our sales staff to our installers, we strive to achieve what you as the customer desires for your building or project. We want to hear from you, if any problem arises or you have any general feedback we want to hear it! Give us a call anytime!



The Highlands

Cambridge, Ontario
Just a quick note to say how pleased I am with my windows and RMS in general! The crew are very professional and a pleasure to work with.

– Linda

Waterpark Place

Waterloo, Ontario

I contacted Tim Davidson a number of years ago when we were looking at switching window replacement companies. We made the switch and never looked back as it was the best decision for our company. All RMS members have great work ethic and integrity. The service is impeccable.
It has been a pleasure working with the RMS Glass family.
Tracy Stemerdink R.C.M


The installation of our new balcony door and thermal sash insert windows (TSI) have made a significant improvement to our condo at Waterpark. No longer do we have condensation or ice forming on the inside of our windows or door during those cold winter days. The SolarBan 60 glass and better sealed windows have provided a more consistent room temperature with no drafts. We know this will also make a difference in our heating and cooling costs over time.
Thanks again,
Bill & Carol Jack

The Atriums

Waterloo, Ontario

This is indicative of the reaction to our sample TSI installations, Thanks Greg for your participation!

2016/12/15 07:21:10AM
It’s Greg M. returning your call from The Atriums Condominium. Tim the window seems to be working out really well. I can sit near it. Not feeling the cold. I can see through it there’s no frost I think it’s working out as expected. So, I hope you end up selling a lot of windows here because it will be an improvement. Anyways if you’d like to give me a call or you’d like to come and see how it’s performing or whatever just give me a call.

The Waterford

Waterloo, Ontario
Client testimonials coming soon…

Contact Us

Send Us A Message

Contact Information

Give Us A Call


Fax Number



Frequently Asked Questions

Will upgrading my glass or windows actually save me money in the long run?

Yes, we’ve had customers notice savings in their annual energy bills up to 30%!

Condominium/Apartment owner: My sliding windows seem to be single panes of glass and they typically frost over completely during the winter time. Would installing the TSI by RMS fix this problem?

Yes, numerous times we’ve seen this happen with the sliding windows that are currently used. With the TSI by RMS, you’ll have an added layer of glass which means a significant increase in the overall insulation value of the window. No more frosty glass, a lot less condensation and it won’t be so cold around the windows!

While performing the work do you take precautions to ensure cleanliness and no damage to personal property?

Yes, of course. One of our first steps in procurement of the project at hand, particularly if it’s being performed in someone’s home, we survey the space, move objects/furniture that may be in harm’s way, we tape off or cover flooring or other objects with drop sheets or a sheet of plastic poly to ensure safety of all objects or surfaces. Then when all the work is finished, we clean up after ourselves and make sure everything is just the way it was!

How can I find out more information?

Send us a message, give us a call or send us an email!