Foster C.I. Mastic is a black, tough, durable and high solids vapour barrier asphalt cutback mastic. Due to its low vapour permeance, it is an ideal surface coating for low temp insulation on outdoor applications.
C.I. Mastic may be used on heated lines, vessels and equipment in intermittent or dual temperature service to prevent the off periods or on cold cycles.
Operating temperature: -40°C to 82°C.