Your leading custom door, trim, and hardware supplier.

Riverside Door & Trim Inc. was established in May of 2005, but our roots go back much further. Our sister company GSM Carpentry Ltd. was established in 1983 and has strong roots in the residential/commercial construction industry in the tri-cities. We are a family owned and operated business with over 40 years experience between the three owners. Riverside Door & Trim Inc. is an expansion of GSM with a showroom/warehouse to become the first “Supply & Install” Trim operation in the Waterloo Region.

Showroom & Warehouse

Our facility boasts a 2500 sq. ft. showroom showcasing interior and exterior doors, mouldings, an extensive line of door hardware, windows, hardwood flooring and many other specialty building products for various applications. It also has a 20,000 sq. ft warehouse and workshop area where we pre-machine doors with our new state of the art door pre-hanging machine, build mantels, and stock a variety of products.

Supply & Install, Consultation, expertise, project planning and execution

If you are looking to start a renovation or build a new house, we have what you need to finish it right. Our showroom is an idea center and features many different options for the “finishing touches” on your home or office. One of our experienced staff can consult with you or your customer at our showroom and on the job site if need be to find the ultimate solution or idea for your application. Our carpenters can then finish the job the way it should be. With a combined over 100 years of experience they can offer unrivaled expertise for complex applications.

Satisfaction Guaranteed

All of our products & services are 100% satisfaction guaranteed. We sell only quality products and stand behind them. In the case of a manufacturers defect, we will replace the product with another with no questions asked. Our installations are also guaranteed in the same way. We only walk away from a project when the customer is completely satisfied. We work WITH you to achieve the most desirable solution.