Slate roofing is one of the longest-lasting roof materials, sometimes lasting more than 100 years. Slate roofing is a fine-grained, foliated metamorphic rock that is created by the alteration of shale or mudstone by low-grade regional metamorphism. It is popular for a wide variety of uses such as roofing, flooring, and flagging because of its durability and attractive appearance.
Slate shingles have been around for over a hundred years and last longer than any other roofing material. They are durable, but they are also expensive. find out whether or not a slate roof is worth the investment for you.