Efflorescence is not a rock band. That’s Evanescence. Efflorescence is the white, chalky substance that appears on concrete, pavers, brick, and stucco. It is residue that is left behind when hard, ...

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 ...

A powdery substance called efflorescence will sometimes appear on stone, concrete or tile surfaces. This shows up as irregular, whitish blotches and is especially frequent around joints and grout ...

Did you recently have a masonry contractor construct a brick retaining wall in your garden? Perhaps, it was a new chimney or a brick patio. Months after the job was finished white deposits have ...

Q. In a recent column, someone had bird droppings problems and wanted to know if the cleaning technique (12 percent hydrogen peroxide to 1 cup of ammonia) could clean a natural bluestone patio. Your ...

Does your basement have white, fuzzy stuff showing up on masonry walls or floor? Does paint peel off in certain areas of blocks or poured concrete no matter how often you recoat? This problem might ...

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.