Thatching is the art and craft of covering a roof with vegetation such as straw, water reed, sedge, rushes and heather. It is probably the oldest roofing material and has been used in both tropical and temperate climates throughout the world. Thatch is still commonly employed by traditional builders in developing countries, usually with low-cost, local vegetation.
A fault in turf hedging, when the bottom of one course of turfs is allowed to project over the top of the course below (Devon). Also known as datching (north Devon).
