ABOUT US

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. 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.