Q: I have noticed a white powder around the edges of my concrete walkway. Should I be concerned? A: The white powder is the result of efflorescence, which occurs when a soluble salt, such as earth, ...

I routinely presume that people know all about efflorescence, but in fact many don’t understand it at all. I’m referring to the fluffy white deposits you might find on your concrete floors, brick ...

We may receive a commission on purchases made from links. If you've noticed a white, powdery substance on a surface in your home, you may accidentally mistake it for mold at first. However, upon ...