"I understand spar urethane is better for water and uv rays than polyurethane. My window sashes have one coat of poly, can I use spar over the poly?791k - 113 sec @ 56k This site uses Flash thewoodwhisperer.com/a-better-way-to-apply-spar-urethan... thewoodwhisperer.com/a-better-way-to-apply-spar-urethane-question-of-the-week/"
