Iron Sentry is a metal roof leak repair system that provides a seamless barrier against roof leakage and rust by utilizing a polyurethane sealer applied in seams, holes and fasteners. The sealer is non-toxic and cannot be penetrated by oxygen or water, even as it expands and contracts with the weather. Iron Sentry is composed of a non-mercury elastomer that extends roof life and reduces building operating costs by as much as 30 percent. Building owners also minimize environmental impact because they are using less new materials that will eventually need to be disposed of in a landfill; and the product contains no mercury; a key necessity for many construction materials.

Metal Roofing June July 2009 Page 45