How long does thatch last?
This does depend upon the quality of the work and materials used, and can vary enormously. In general a roof thatched in long straw will last from 20-30 years, with maintenance if needed and a new ridge approximately every 15-20 years, although they can last up to 50 years. In general a roof thatched in water reed will last 50-70 years with maintenance if needed and a new ridge approximately every 15-20 years, although they can last more than 80 years.
