GrabberGard IFC caulk is a latex-based, intumescent caulk designed to stop the passage of fire, smoke, and fumes through fire-rated separations. GrabberGard IFC has been tested in many different 1, 2, 3 and 4 hour rated floor and wall assemblies. It has excellent adhesion qualities with most common construction materials. After fully cured, GrabberGard IFC forms a durable, flexible water resistant and paintable seal.