Join Date: Feb 2012
Location: New Orleans Louisiana
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Re: Deck Repair Materials
Get rid of the polyester and get some epoxy for the filler. It's a lot easier to work with, and doesn't have the bonding problems that polyester does. For this, you can use a fairing compound instead of high strength filler, since the repairs aren't structual.
Apply, sand, then paint.
Polyester has a bad habit of not liking to bond to finished substrates, and can only achieve a moderate physical bond. Even then the surface needs to be clean, very rough to get good tooth, and it just won't bond to some materials. Epoxy on the other hand just needs a surface free of dust.