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Old 05-07-2012, 02:21 PM   #5
Saltheart
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Join Date: May 2000
Location: Cumberland,RI
Posts: 8,555
I've had the same issue with both Spar Varnish and Polyurethane on exterior mahogany on my boat. Only way around seems to be cover in winter and to light sand and recoat every year in spring.

Saltheart
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