I used this to make lime wash paint. The 50lb bag makes about 30 gallons of paint which you can keep indefinitely in a 32 gallon trash can with a lid. We painted all the masonry walls in our cellar and we are thinking about doing the exterior brick walls in the back of the house and maybe some plaster walls inside. It looks great, and makes everything look clean. It's good for your bricks too-it let's them breath. Use with a big soft b..