Have you, or maybe someone you know had their floor done and the cork board is still showing?? Let me explain why this is not ideal for any epoxy application. Not only is this a major failing point for epoxy floors, but this isn't a professional look! When a contractor doesn't seal this cork board, it's allowing water to go deep into this joint, exposing the base coat to moisture. This over time is going to break that coating down allowing the floor to peel. It's not a matter of if, it's a matter of when unfortunately... Here at Rock Solid every floor we do we seal and coat these areas with a specific compound that not only seals these, but also allows us to coat these. Leaving you with a seamless, sealed, indestructible floor!