POR-15 Top Coat is a direct-to-metal (DTM) coating designed to work incredibly well in all applications where there is a need to help preserve substrates susceptible to corrosion. POR-15 Top Coat safety colors comply with OSHA required/recommended color codes for marking physical hazards and designating caution, to include protective equipment. Under exterior exposure POR-15 Top Coat has exceptional long-term sheen and color retention. POR-15 Top Coat can be applied directly to metal substrates or previously painted surfaces, with no need for a primer or undercoat, and is formulated to form a robust barrier that sheds moisture to provide long-lasting protection. POR-15 Top Coat provides excellent adhesion and when used over POR-15 Rust Preventive Coating, works to provide a permanent barrier to corrosion. No Need for Primer or Undercoat Use over POR-15 Rust Preventive Coating for Permanent Protection Exceptional Long-term Sheen and Color Retention