Coverite shrink control (TM) also makes 21st Century Flat film easy to apply-with a slower shrink rate that increases positioning time for more professional-looking results. Lightweight at Only .25 ounces per square foot. Dry adhesive is activated when heat is applied. Applies at 250-325ÂºF over wood, fiberglass, balsa sheet foam, and itself. Fuelproof and Waterproof. May be cleaned with glass cleaner or MonoKote cleaner/polish.