Q. A few years ago, I installed 12-by-12-inch brick pavers over the original concrete pool deck. They could not be sealed, because rainwater has to drain through them into the old drain trenches. The ...

Q: My wife and I have an outdoor patio built with colored, precast-concrete paving blocks. It doesn't take long each year for black mold and mildew to start growing on it. We also have an issue with ...