Building a concrete counter top 4x10 and cannot fine a sheet of melamine 10 feet long anywhere. Anyone know where I could get a piece? I’d rather not joint to eliminate a seam
Use plywood as your base with a seam, then Formica (plastic laminate) as your base layer in contact with your concrete. You can get Formica cheap because you don't care what it looks like and there is always some pattern that isn't selling and they want to get rid of, you'll make them happy to take it.