It's a hot summer day and the sun is bright—perfect weather for taking a dip in your pool. You venture out to the backyard to check out the pool you haven't used since last summer. Lo and behold, it's ...

Question: The roof on my split-level house is "stained," says e-mailer "Bob from the Suburbs." Is it mold? My roof looks discolored and it looks like I'm ready for a new one. In my development, roofs ...

A: It won't hurt you, but if you see black algae, it is time for an aggressive treatment before the problem gets out of control and requires a costly fix. This is a "smart" algae that grows a "head" ...

The rainy season brings welcome relief from the heat, but it also creates the perfect conditions for unwanted growth, especially algae. High humidity, minimal sun exposure, and leftover organic debris ...