FOSTER ELASTOLAR Sealant is a fire-resistive, flexible, butyl elastomer-based, vapor barrier sealant. It is designed for sealing joints in insulation (except polystyrene foam), metal and masonry wherever maintenance of a water-tight and air-tight seal is required. It can be used as a joint sealant in low velocity duct air-conditioning systems. It is ideal for sealing the laps of metal jacketing to prevent the entrance of moisture.

ELASTOLAR Sealant is a fast-drying, vapor barrier sealant that can be top coated with most solvent-based, flexible, light-colored coatings without danger of bleed through. It is weather resistant and may be used outdoors without top coating.

ELASTOLAR Sealant is the preferred product for flashing projections and terminations where a complete moisture and vapor seal is required.