FOSTER 60-90 MONOLAR MASTIC

FOSTER MONOLAR MASTIC is a tough, flexible, fire-resistive, elastomeric finish for protection of outdoor thermal insulation. It contains chlorosulfonated polyethylene rubber (formerly known as Hypalon*). It is an excellent vapor retarder for low temperature insulation on tanks, pipework, ductwork, vessels and fittings.

MONOLAR MASTIC is produced under the classification and follow-up service of Underwriter’s Laboratories, Inc.
 

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Product Description

AVERAGE WEIGHT / U.S. GALLON (ASTM D1475):
10.4 to 10.8 lbs. (1.25 to 1.30 kg/l)

AVERAGE NON-VOLATILE (ASTM D2369):
42% by volume (60% by weight)

SERVICE TEMPERATURE LIMITS:
Temperature at coated surface.
-50°F to 220°F (-46°C to 104°C)

WATER VAPOR PERMEANCE (TYPICAL AVERAGE): Tested with reinforcing mesh.
-ASTM E96, PROCEDURE A: 0.03 perms (0.02 metric perms) at 45 mils dry (1.14 mm).
-ASTM E96, PROCEDURE E: 0.025 perms (0.016 metric perms) at 51 mils dry (1.3 mm).
-ASTM F1249: 0.039 perms (0.026 metric perms) at 45 mils dry (1.14 mm). Tested at 75°F (24°C) and 50% RH.

MONOLAR MASTIC meets the permeance requirements of ASTM C755-19 for below ambient vapor retarder coatings.

WET FLAMMABILITY (ASTM D93):
Flash Point: 124°F (43°C)

SURFACE BURNING CHARACTERISTICS (ASTM E84):
Flame Spread: 10
Smoke Developed: 15
 

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General Insulation Company Inc. is an insulation supplier / insulation distributor that stocks and fabricates a wide variety of industrial and commercial air barrier, vapor barrier, moisture and water barrier products for the construction market.

Foster 60-90 Technical Data Sheet

Foster 60-90 Safety Data Sheet