In southern India, the surkhi is mainly used for waterproofing the roof and it also acts as a great thermal insualtion for the house to reduce the climate. Surkhi mortar is a mixture of lime,surkhi and water. It is the li
me mortar in which sand has been substituted by surkhi for economy and strength. Surkhi is one of the main components for wall plaster with lime powder in ancient india.