I'm laying 3/4" oak hardwoods. I am trying to figure out a gameplan for the fireplace slab - I think it is made of granite (granite or marble). As it sits now, the floor strips are only a couple of millimetrs taller than the botoom of the slab. I would like to get the "clean" look by going underneath this grante slab. Do you think it's safe to grind a way this small difference? I'm afraid of cracking the entire piece. (I promise to wear safety goggles).
I have under cut granite but not very deep. So if you are gluing your wood down you dont need as expantion room. If you are floating your wood you need to install a transition strip around your mantle.
The fellow who put in my hearth said that if my wood wouldn't go under the stone, to call him back and he would undercut it for me. Everything fit, so I have no idea how it would have worked, but he indicated it would be an easy thing.