I painted my awful underlayment to look like hardwood floors! I <3 it!
So I had this crazy white and textured ceramic tile in the foyer and I hated it. Minutes after washing it, it would show dirt and it was so.... well, white. So I chopped up the tile with a hammer and chisel and was left with underlayment. I can't afford hardwood floors but I sure wanted the "look" of them. So I primed it, painted it, and faux woodgrained it. After it dried, I added some gloss and they