Permalac NT Black is a fast-drying, easy-to-apply acrylic lacquer coating. It is an opaque tinted, low VOC formula which lays down similar to a paint. Permalac NT Black is highly resistant to environmental breakdown caused by UV, acid rain, and salt. It has outstanding adhesion to a variety of substrates, including patinated and polished metals, hard woods, and masonry or stone products. Users report excellent results on copper, brass, bronze, steel, aluminum, zinc, and painted wood substrates.