Black Gold® Liquid Rubber Flashing Cement is a premium grade highly modified, SBS Flashing Cement. This product is formulated for use with built-up systems, modified bitumen membranes (APP & SBS), base sheets, ply sheets, shingles and other approved surfaces. Black Gold® can be used in all weather conditions and even seals and bonds under water. This high quality product is available exclusively to professional installers. NOTE: DO NOT use on TPO, EPDM, PVC or other rubber/plastic single ply membranes.