That depends on your home’s style, your budget and your own preferences. With Ply Gem, you can choose from a wide range of styles to meet your needs. Ply Gem and Mitten are part of the Cornerstone Building Brands family and supply the North American market with premium exterior building products. Mitten vinyl siding’s combination of exceptional durability, beautiful colour choices, and an industry leading warranty make it the #1 choice for professionals and homeowners.