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, ...

On cool and damp days, many homeowners worry about mold. When it pours and storms outside, windows often remain closed to avoid letting in moisture. Anxious eyes scan every visible spot on the wall.

Efflorescence is the white powdery substance you might notice on basement walls, concrete surfaces, or masonry materials. It forms when water moves through a porous material like concrete or brick, ...

Retaining walls are constantly exposed to soil pressure, groundwater, and seasonal moisture changes. Even a small failure in waterproofing can lead to seepage, efflorescence, reinforcement ...