MONOLAR Ⅱ Mastic provides outstanding weather barrier and vapor barrier protection for most board stock thermal insulations except polystyrene. It normally bonds well to aluminum foil facings, but a test application is recommended to confirm adhesion.
MONOLAR Ⅱ Mastic meet NFPA 90A and 90B 25/50 requirements and contains no asbestos, lead, mercury, or mercury compounds.

