Foster Monolar II Mastic is a grey, tough, flexible, fire-resistive elastomeric finish for protection of thermal insulation. It is also used as a vapour barrier finish for fittings. It is excellent for outdoor use where good colour retention, chemical resistance and durability are required.
Monolar II Mastic provides outstanding weather barrier and vapour barrier protection for most board stock thermal insulations except polystyrene.
Operating temperature: -40 to 121°C.