Thatching is a traditional roofing technique that involves the use of STRAW to create a waterproof layer. It has been used for centuries and is still popular in some parts of the world today. The STRAW is usually woven together and then layered over a framework of poles or beams. This creates a durable and weatherproof roof that can last for many years. The STRAW also provides insulation, helping to keep the interior of the building warm in winter and cool in summer.