I'm looking to paint deep window sills that will have flower pots/cork mats on it. I'm leaning towards brushed/rollered EmTech 6500 with a HF primer underneath, on top of a BIN Shellac layer.
Should I use the EmTech 9000 polycarbonate as a top coat for the horizontal surface for added durability? I figured standard 6500 for all the vertical and non-contact surfaces are good enough.