High-Build Primer Surfacer is a flexible acrylic coating for priming steel, aluminum, urethane, fiberglass and plastics. Features:Provides superior adhesion Excellent filling properties Works on multiple substrates, including metal and plastic Easy to sand Topcoat with most refinish material Applications:Steel Aluminum Plastic SMC Fiberglass Properties:Coverage: 11 sq. ft. at 2 mil DFT Coats: 2-3 medium wet Dry time: 1 hr Flash time: 5-10 min between coats