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Stay Level-Headed with ProSpec/Bonsal American's EST

ProSpec/Bonsal American's EST is an additive that works by controlling the pre-cure chemical and physical reactions

July 31, 2009

This article first appeared in the PB August 2009 issue of Pro Builder.

Self-leveling products have a large surface-to-volume ratio, so they are prone to shrinking, cracking, curling and delamination. ProSpec/Bonsal American's EST is an additive designed to reduce the chance something will go awry. It works by controlling the pre-cure chemical and physical reactions during the underlayment's plastic stage where up to 80 percent of shrinkage occurs. For FREE information, visit http://pb.hotims.com/23725-256

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