A client has a TV room with concrete over wood flooring. When they bought 20 years ago it had glued-down carpet over it, which they removed and dug out most of the mastic out of the cracks that had formed over the years.
Now they want to clean out the rest of the cracks and fill them, and refinish the surface. Mrs. Client has had some tile work done around that room’s fireplace, and wants to use the same grout in these cracks. We’re in the Palouse section of the Pacific Northwest, with huge annual swings in humidity. I am concerned that the effects of those swings on the wood substrate will either cause the cracks to widen further, or narrow and crush the grout, depending upon where you are in the humidity cycle.
I’m thinking about using a color-matched sanded caulk.
Sorry. No pictures. And it’s too bad, because it’s a really cool craftsman home.
Thanks for any input.