Foster 95-44 Elastolar Sealant | GLT Products

Foster 95-44 Elastolar Sealant

Foster® 95-44™ 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 aluminum jacketing to prevent the entrance of moisture.

ELASTOLAR Sealant meets NFPA 90A and 90B 25/50 requirements. WATER VAPOR TRANSMISSION RATE (ASTM E 96) The water vapor transmission through 1 in. of impermeable insulation in 12 x 18 in. blocks with 1/8 in. joints of ELASTOLAR Sealant is too small to measure.


  • Fast drying vapor barrier sealant that can be top coated with most solvent-thinned, flexible, light colored coatings without danger of bleed through. 
  • Weather resistant and may be used outdoors without top coating.
  • Preferred product for flashing projections and terminations where a complete moisture and vapor seal is required.
  • No asbestos, lead, mercury, or mercury compounds.

GLT Products is your One Source supplier for mastics supplies. For more information, please see our data sheet or contact your sales rep.

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