How often does a thatched roof need to be replaced?
The longevity of a thatched roof will depend on a few factors including the quality of the current thatch, the type & quality of straw/reed that your roof is constructed, and your local environment. Having a good maintenance plan for your thatch will really benefit your property in the long run, this should include monitoring of moss build-up, the physical appearance (gullies, chimneys & water flow), and ridge maintenance.