Mastic & Sealants

mastic

An asphalt-based material to form a tough, efficient weather and vapor barrier film when applied to any standard type of insulation (excluding Styrofoam), steel or building material surface.  Use for protecting insulation and steel structural from weathering, corrosion and chemical action.  Provides non-cracking film that prevents moisture seepage from attacking steel surfaces in process heaters.  Also prevents air and moisture infiltration through boiler wall settings and stack bases; protecting boiler walls against moisture and deterioration.