Hello Dava Fuller,

Basically the concrete you have now is stained - with mildew and dirt. A good power washing first will let you know what clean color you have underneath all that.

And yes you can stain it. The lime will have diminished so you'll have to use a water-based or dye-based stain.

Karen Haggard, CID

I'd polish a section and see how you like that first.