COLPLY EF Flashing Cement is a high performance and single-component viscous cement for use with SBS-modified bitumen membrane flashing assemblies. COLPLY EF (environmentally friendly) Flashing Cement is unique in that it is a solvent-free and ultralow VOC material allowing for application flexibility on job sites where exposure to VOCs or odor may be a concern. Due to its polymer composition, once cured, COLPLY EF Adhesive provides an additional layer of elastomeric waterproofing protection beneath or between membrane plies.