EnergyComplete® Sealant fills gaps and cracks that cannot be reached post-drywall to eliminate air leakage. With no harmful off-gassing during application and curing, the foamed-in-place air sealant creates a long-lasting gasketing layer between lumber and drywall that flexes with the house. It helps reduce the chance for mold growth by keeping airborne moisture from entering wall cavities. EnergyComplete® Sealant contributes to points in green building programs such as ENERGY STAR®, LEED® and the NAHB National Green Building Standard, and is GREENGUARD Indoor Air Quality Certified®. Owens Corning.