Sand faced plaster is used for various years. It is a cement-sand mortar applied on masonry and served as a wet-proof coat on brickwork. It is rough in appearance, thus also called as ‘Rough Plaster.’ To get a rough finished sponge is used on the second coat when mortar is wet. Generally, It’s thickness is 20mm, where the First coat is 12mm, and the second coat is 8mm thick.
Basically, due to roughness and wet-proof quality, it used on external walls.