A basic MDF countertop receives a facelift with the help of a gray feather finish, sandpaper, and sealer. Here's how to pull off DIY concrete countertops. Related: Ways to Use Industrial Style in ...

If the installers opt for not applying a sealer, the polished concrete is unprotected. A glass of wine or vinegar-dressed salad spilled in a restaurant, a jar of pickles, beets or Worcestershire ...