Q:In the garage, the concrete foundation, or lower part of the wall that meets the floor, is quite powdery and flaking off. Is this safe? Should we paint it? How do we prevent the concrete from ...

Q. I feel our new home has some serious problems, but our builder disagrees. The house is less than 6 months old, but we have ugly white deposits that are leaching out of our chimney, a wing wall that ...

White deposits on the exterior of a home are almost certainly efflorescence. They're just salt crystals that are left behind when water evaporates from the masonry surfaces around a house. The problem ...