Ana amfani da membrane mai hana ruwa a cikin ginin bango, rufin rufi, da ramuka, manyan tituna, filayen ƙasa, da dai sauransu, don tsayayya da ruwan sama na waje, magudanar ruwan ƙasa na samfuran kayan gini masu sassauƙa waɗanda za a iya murɗa su cikin girma, a matsayin tushen aikin kuma babu yabo tsakanin haɗin ginin, shine shinge na farko ga duk aikin hana ruwa ruwa, yana taka muhimmiyar rawa a cikin duka aikin. Kayan tushe ya ƙunshi roba na roba ko guduro na roba.

Shawara: TER 4334; CO 054;3062E;S537-2;S501A;S537-3;S5890F;