Thatching is building a roof with dry vegetation such as straw, reeds, sedge (Cladium mariscus), rushes, heather, or palm branches. The vegetation is put on top of each other so as to make sure water stays away from the inner roof.
Carrying grass to build roofs in
Ethiopia
Inside view of an
Inca roof in one of the few reconstructed buildings of
Machu Picchu
