Foster Weatherite Mastic 46-50

FOSTER WEATHERITE MASTIC is a fibrated, water-based breather mastic. It features a bright white color and extremely smooth, creamy, thixotropic consistency for fast, easy application.

Product Description

WEATHERITE MASTIC has excellent brush, trowel, and spray properties, is non-flammable when wet, and has a mild odor during application.

WEATHERITE MASTIC forms a tough, fire-resistive dry film that is extremely flexible and provides a smooth, attractive finish on both indoor and outdoor applications. It has excellent adhesion to most foil facings. It may be used over a wide variety of thermal insulations including polystyrene and rigid polyurethane board stock insulations.

WEATHERITE MASTIC is produced under the classification and follow-up service of Underwriter’s Laboratories, Inc. and meets NFPA 90A and 90B 25/50 requirements.

WATER VAPOR PERMEANCE (TYPICAL AVERAGE): ASTM E96, Procedure B: >1 perm at 1/16 inch (1.6 mm) dry film thickness

SERVICE TEMPERATURE LIMITS:
Temperature at coated surface.
-20ºF to 180ºF (-29ºC to 82ºC)

Foster Weatherite Mastic 46-50 TDS

Foster Weatherite Mastic 46-50 SDS

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