This document discusses different types of roofing materials, including clay tiles, concrete tiles, slates, and their properties. Clay tiles are used for sloped roofs and come in various styles like Allahabad tiles and Mangalore tiles. Concrete tiles are made from cement, sand and color pigments through an extrusion process. Slate roofing tiles are obtained from quarries as blocks and split into thin laminates. Factors that affect roofing material selection include cost, durability, appearance, and climate. Proper installation methods involve overlapping tiles, using battens and felt underlay, and nailing patterns. Regular maintenance of clay tiles involves inspecting for cracks which can be repaired with mortar.