Ein älterer Mann aus Ban Alm bindet aus Alang-Alang-Gras (Imperata cylindrica) und Bambusleisten eine Dachmatte, indem er jeweils eine Handvoll angefeuchtetes Gras in der Mitte knickt und mit einem Bambusstreifen um die Leiste festbindet.

Long dry grass is spread out across two bamboo stalks which are set up at some height; the grass is moistened. The labourer sits between the bamboo stalks, lays two beams before him on the grass, and takes a handful of grass-blades; he bends these blades in the middle and puts them around the beam on the right, binding them with a bamboo strip. The beam on the left is only used as support for the bent grass and is taken out when the mat is ready.