Slate is a stone which has been metamorphosed from shale – clay like materials that have undergone change under heat and pressure. Slate can be recognized by its sheet-like structure. The material is usually thin, and when fractured flakes off into sheets. Slate is seldom highly reflective unless a coating is placed on it, and its surface is usually uneven unless machine sanded.
Slate is composed primarily of the minerals quartz and illite. There are also minor... Read more
Terracotta is Italian for ‘baked earth’ or ‘baked clay’. Since the earliest of times it has been widely used in building and construction. For example; tiles, water pipes, and in the manufacture of household pottery and ornaments. In its simplest form terracotta is moulded clay that is left to dry in the sun until it becomes hard. Terracotta in its unglazed form is very porous and for this reason when used as flooring it needs to be sealed. Glazed terracotta is produc... Read more