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What is Demilec APX? Demilec APX is freedom from coatings, offered from a manufacturer you trust. Demilec APX is the product of over two years of research and development from the company that brought you SEALECTION 500, HEATLOK Soy 200 and SEALECTION Agribalance. Not only can Demilec APX be sprayed in attics and crawlspaces without an ignition barrier, it comes with the great yields, sprayability and superior service that has become synonymous with the Demilec name. Track the development progress at The product is scheduled to be released on February 12, 2013.