One Company. Hundreds of Products. Endless Possibilities. Ply Gem is North America's leading manufacturer of exterior building materials, including windows, siding, stone, and 40 other categories. At Ply Gem, we provide the nation's residential builders, remodelers and architects with access to a comprehensive range of building products. From new construction to repair, remodel and replacement, our full line of building products provide quality and value for all types of projects. DISCLAIMER: Ply Gem Canada's social media channels share information about our company, our products and our people. We welcome commentary expressing all points of view – positive and negative – but reserve the right to remove posts that are off-topic, offensive, promotional or illegal or contain inappropriate language, hate speech, proprietary information, personal data or personal attacks.