Alliston Windows and Doors only uses quality products backed by industry leading warranties.

Quality-crafted with attention to detail, Gentek products combine outstanding beauty and strength with the luxury of a low-maintenance finish. Backed by more than 50 years of manufacturing expertise, it is our company-wide commitment and never-ending ambition to produce the very best building materials – products deserving of our good name and worthy of the place you call home.

Royal Building Products believes the home a person chooses is not just the dwelling, but the neighborhood the home comes to symbolize. Whether through pipes that feed the neighborhood fresh water underground to or through the most visible design details on a private residence, Royal designs products that enhance the life of a neighborhood. Products that provide low maintenance, save energy, are sustainable and provide a beauty that lasts over the long term.