Daltile has released its Perennial Porcelain Roofing Tile, which is resistant to frost, impervious to water and walkable. Class 4 impact-rated by Intertek Labs, the tiles also boast a 110-mph wind rating and Class A fire rating. The product offers high breaking strength, low overall weight and a lifetime limited warranty. Perennial Porcelain Roofing Tile is made in the U.S.