Foster 90-07 H.I. Mastic

FOSTER H.I. MASTIC is a highly durable, protective weather coat for use over thermal insulation installed outdoors where an economical breathing mastic is required.

FOSTER H.I. MASTIC is an asphalt emulsion. It will not crack (particularly at the critical right angle bends) during curing. It has exceptional weathering stability and develops with its final set a firm, durable surface with good resistance to acids, alkalies, abrasion, and other abuses typical of outdoor industrial conditions. It has no heat flow, remaining hard and stable under all normal operating temperatures.

FOSTER H.I. MASTIC meets requirements for LEED IEQ 4.2 Low-Emitting Materials, Paints and Coatings.
VOC: 21 g/l, less water and exempt solvents.

FOSTER H.I. MASTIC contains no asbestos, lead, mercury, or mercury compounds.

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Product Description

COLOR:
Black

APPLICATION CONSISTENCY:
Trowel

AVERAGE WEIGHT/U.S. GALLON:
8.7 lbs. (1.0 kg/l)

AVERAGE NON-VOLATILE :
50% by volume (52% by weight)

COVERAGE RANGE :
(Subject to type of surface being coated.) Wet coverages shown below are for smooth non-porous surfaces. Porous or rough surfaces may require higher gallonage to attain required dry thickness.
Dry Thickness: 0.112 in. (2.8 mm) to 0.123 in. (3.1 mm)
Equivalent Wet Coverage:
0.25 in. (6.4 mm) 16 gallons per 100 sq. ft. (6.5 l/m2)

DRYING TIME:
Touch: 8 hours at 73°F (22.8°C)
Through: 24 hours at 73°F (22.8°C)

WATER VAPOR PERMEANCE (ASTM F 1249):
1.0 perm at 1/8 in. dry film thickness
(0.7 metric perm at 3.2 mm)

SERVICE TEMPERATURE LIMITS:
(Temperature at coated surface)
Minus 20°F to 200°F (-29.0°C to 93.3°C)

WET FLAMMABILITY (ASTM D 3278):
Greater than 200°F (93°C)

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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 90-07 H.I. Mastic Technical Data Sheet

Foster 90-07 H.I. Mastic Safety Data Sheet