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Old 05-09-2015, 01:02 AM   #16
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When applying spray foam, specifically closed cell, it is optimal to do it in more thin coats than in one thicker coat do to the way it cures, If you spray some for example and you let it cure, then you slice it open you will notice it appears porous inside and more smooth on the outside. This is key to getting maximum moisture barrier from it. Each layer will give another outter barrier. More layers in the same depth gives more protection then less thicker layers.
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