Dear Tim: My wife and I have an outdoor patio 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 ...

Question: 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 ...

If your concrete patio is worn out, badly stained, and weather-beaten, don’t despair. There’s a simple, affordable way to restore patios to like-new condition, and it’s no more difficult than painting ...