Q. The concrete steps at my house are moldy and kind of green on the risers, except where I applied a concrete sealer. I did it badly, so you can see areas that look like drips. How can I safely clean ...

Lowe Larretta is former lead editor for Forbes Home, covering all things related to home improvement and good design. She previously worked in the decor and lifestyle spaces for digital publishers ...

There’s an old joke about life having only two constants. For concrete, one could argue that the punchline includes the potential of cracking and that every situation is going to be unique. But ...