yes its ok for patches, prep your surface as if you was using hardwall (damp down walls and get rid of surface dust) ,browning, bonding and s+c was all anyone used at one time, sets really fast with cement or mucky water or warm water, its temperamental is browning and you struggle to put any decent area on before using a straight edge it dry's up quickly. Its no good for low suction backgrounds or on pva , but it'll do for patching ,wet the existing plaster your patching into or it will dry and crack away from existing work not the best for patching but will be worth it for £2.00 a bag