The most durable paper board on the market! Builder Board replaces the need for large, bulky sheets of masonite and it rolls out fast and flat. With the new Liquid Shield technology, Builder Board is now spill proof. It defends against water, paint, mud and more! It's also 100% recyclable. Protects: Granite, Travertine, Marble, Terrazzo, Stone, Colored Concrete, Tile, Wood, Carpet, Linoleum, etc. Non-staining. Size 38” x 100’. Just one roll will cover the same area as 10 sheets of masonite.