Kayabuki is a type of roof structure using kaya (grass) (Japanese pampas grass or cogon) as the material for thatching and is also called kaya-thatched roof.
茅葺（かやぶき）とは、カヤ(草)（ススキやチガヤなど）を材料にして葺く家屋の屋根の構造の一つで、茅葺き屋根、茅葺屋根ともいう。