Baked clay molds are used to make clay tile roofs. The length of time and temperature at which the tiles are heated determines their density. There is a wide variety of colours available for roofing tiles, including white, yellow, orange, and even brown. There is an enormous range of colours, forms, sizes, patterns, and textures available for clay roofing tiles. Clay roofing tiles were first crafted by hand and then fired, and they have been used for thousands of years all over the world. Clay