In larger structures, moisture laden air migrates into the inner environment from the outside climate. This moisture migrates far enough into the assembly to become cooled down and formed back into puddles of water. This liquid water corrodes metals in the building assembly, providing one of the ingredients for mold growth. Also this moisture saturates building materials, causing water damage. This is why air barrier systems are essential, because they are designed to stop the infiltration of moisture laden air, preventing condensation in the wall assembly. Air barrier systems provide climate control, so air leaking in from the inside or outside is barred from entering the environment. Mar-flex offers full Air Barrier Systems, so check us out today!