Black-Knight/Black-Stallion Mastic is a cold-applied, trowel grade, coal tar-based polymer-modified roofing mastic. Unlike other coal tar-based mastics, Black-Knight/Black-Stallion Mastic is a non-sag coal tar mastic. This product is designed for the installation of flashing systems on both vertical and horizontal surfaces. It can also be used for the installation of roof drains, vent pipes, pitch pockets, or wherever a mastic product is required. Black-Knight/Black-Stallion Mastic is also designed to repair any clean built-up or modified roofing surface temporarily.
