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Foster 30-90 Vapor-Safe Mastic

Foster 30-90 Vapor-Safe Mastic

FOSTER VAPOR-SAFE MASTIC is a high solids water based, fire resistive, flexible vapor barrier finish for most types of thermal insulation, including polystyrene foam. Is non-flammable when wet and has a mild latex “paint type” odor. Is ideal for vapor sealing ASJ, FRK, and FSK jackets and board facings at joints, laps and over staple and weld pin punctures. Meets NFPA 90A and 90B 25/50 requirements.

VAPOR-SAFE MASTIC meets requirements for LEED IEQ 4.2 Low-Emitting Materials, Paints and Coatings. VOC: 36 g/l, less water and exempt solvents. Meets the requirements of Military Specification MIL-PRF-19565C, Type II and is listed on the QPD19565.
 

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Product Description

AVERAGE WEIGHT/U.S. GALLON (ASTM D 1475):
11.5 pounds (1.38 Kg/l)

AVERAGE NON-VOLATILE (ASTM D 2369):
59% by volume (71% by weight)

SERVICE TEMPERATURE LIMITS:
(Temperature at coated surface) Minus 20°F to 180°F (-29°C to 82°C)

WATER VAPOR PERMEANCE:
ASTM E 96 Procedure B, 0.013 perms (0.009/metric perms) at 43 mils dry (1.09 mm)ASTM F 1249, 0.08 perms (0.05 metric perms) at 37 mils dry (0.94 mm). Tested at 100°F (38°C) and 90% RH.

WET FLAMMABILITY:
Flash point: None to boiling, 212°F (100°C).

SURFACE BURNING CHARACTERISTICS(ASTM E 84):
Flame Spread: 15
Smoke Developed: 30
 

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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 30-90 Technical Data Sheet

Foster 30-90 Safety Data Sheet

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