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Originally Posted by ebacherville
Progress:
heres is a warning PINK FOAM INSULATION melts with fiberglass.. use the foil backed yellow foam insulation .. found out the pink foam isn't the stuff to use..
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You must be using polyester resin. To 'glass over foam, use epoxy resin. But it's more $$$ and touchier with the catalyst ratio. i.e., You can't speed it up with more catalyst. To obtain full strength it must be mixed to its specified (on the label) ratio. If more catalyst is added, it may not even cure completely. But anyway... It sounds like you found a way to work around it.