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Re: spar poly on garage doors;

Posted By: Greg Scholl <beatkat@adelphia.net> (ct-waterbury1b-56.wtrbct.adelphia.net)
Date: 4/14/4 09:53

In Response To: spar poly on garage doors; (prem)

Unfortunately, whoever gave you the advice to coat Cedar with spar, probably didn't do you a service. Cedar has a high natural oil content, and is a relatively soft wood, as you probably know. Normally, Cedar will age to a silver/grey color, which it will eventually do no matter what you do to it, unless you are ready to devote much care to it every 6 months to a year. An oil type finish would've been a better choice, perhaps something designed for cedar shakes or siding, with a preservative base,mildew and mold inhibitors, and U.V. blocking additives, and perhaps a stain in it as well. A varnish or semi-solid stain/paint is a coating that sits on top of the wood and will flake and peel with wood movement and wetting/drying of a tropical climate. Oils soak into the wood and harden from inside, leaving the porosity of the wood to "breathe" while still resisting water soak up and release. There are many products from Thompson's, Cabot, Cuprinol, etc available. http://www.wrcla.org/finishingcedar/finishingconcepts/overview.asp This site has an overview of finishing Western Red Cedar...which I am guessing you have...the real problem is weighing the cost/effort of removing your existing failed Varnish and getting a new finish to apply/perform well after that process... or replacing the cedar facing alltogether..and finishing it properly from the start while the Cedar is relatively new wood...best of luck.

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