Efflorescence: That Annoying White Powder on Masonry Walls
You’ve seen it on a lot of buildings, perhaps even on some in your own properties. That white powdery substance is called efflorescence; it’s a deposit of soluble salts which is most obvious during the winter, but may also be observed throughout the year following heavy rains and sudden drops in temperature.
It's caused by 3 things. Learn more about its causes, its impact on your buildings and how to get rid of it for good.