Thatching is the craft of building a roof with dry vegetation such as straw, water reed, sedge (Cladium mariscus), rushes, heather, or palm fronds, layering the vegetation so as to shed water away from the inner roof. Since the bulk of the vegetation stays dry, and is densely packed - trapping air - thatching also functions as a quite significant insulation material. It is a very old roofing method and has been used in both tropical and temperate climates. Thatch is still employed by builders in developing countries, usually with low-cost, local vegetation. Repair work to the thatched roof at Great Dixter has begun.
May 22nd, 2017
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