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Protect edge of plywood
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<blockquote data-quote="Johnny" data-source="post: 424042" data-attributes="member: 13599"><p>for exterior plywood signs, signmakers will seal first with a </p><p>50/50 formula that could be a mix of any products like varnish or oil based primer.</p><p>then, 48 hours later, take a good "paintable" silicone free latex caulk and FORCE it into the edge grain</p><p>with your finger - pack it tight - let that cure according to directions on the product.</p><p>then, prime and paint the whole plywood panel.</p><p>The two that I have used with good success is the Loctite PolySeamSeal </p><p>and the DAP Alex acrylic latex 25 year caulk.</p><p></p><p></p><p>just one more way of "trying" to fight the elements.</p></blockquote><p></p>
[QUOTE="Johnny, post: 424042, member: 13599"] for exterior plywood signs, signmakers will seal first with a 50/50 formula that could be a mix of any products like varnish or oil based primer. then, 48 hours later, take a good "paintable" silicone free latex caulk and FORCE it into the edge grain with your finger - pack it tight - let that cure according to directions on the product. then, prime and paint the whole plywood panel. The two that I have used with good success is the Loctite PolySeamSeal and the DAP Alex acrylic latex 25 year caulk. just one more way of "trying" to fight the elements. [/QUOTE]
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