Used for centuries and commonly formed on the upper thigh of workers, this material is known as Cap and Pan, Mission, or Spanish style tile. Designed to be a two piece (bottom piece pan, top piece cap)system, or a modern one piece S tile, similar in look to old - Spanish Mission - tile roofs. Commonly having mortar to secure trim pieces (ridge, hip cap pieces). There are an unlimited number of special products that are made of clay but these are common in their use. 50 year/lifetime span, this product is sold and reused, often for several hundred years. Class A fire protection.