Quick Question - I'm ready to start patching the countersink holes (and fill in a seam between two sheets of plywood) on the exterior of my tiny trailer before applying the exterior coat (CPES followed by exterior paint). What do folks recommend I use for patching? Is inexpensive wood filler good enough, or do I need something more exotic like a plastic Bondo type material? I guess my real question is what is compatible with the CPES...or, alternatly, what should I avoid.
Stephen