Summary: I imagine you've heard an episode or two of this show, so you may know that we always emphasize surface preparation and testing as keys for a successful project, no matter the task. The surface that a sealer, coating, floor covering, etc, is going on, is called a "substrate" and we will always insist that the substrate is in the proper condition before covering it up. So what exact IS a substrate made of and how should you prepare it? Thats what we tackle today.
