For 70 years Ply Gem has been an industry pioneer and we continue to lead and innovate through our unique ability to create The Designed Exterior. This complete solution combines materials, colors and textures -- all intended to work together to create dramatic curb appeal and allow you to spend time enjoying your home, instead of fixing it. Our comprehensive range of building products includes nearly everything on the outside of your house from windows, doors and siding to designer accents, stone veneer, fence and rail.