Cedar and slate are among the most recognizable roofing materials. These are the originals - the material generally used on sloped roofs for many decades until manufactured synthetic shingles obtained a significant price advantage. Both are still used in higher price, higher quality applications, along with a selection of other natural stone and natural wood products.

• American Slate offers a wide range of natural slate roofing material. The company mines and shapes its products which also include flooring and interior accents.