Volclay Seamtape is a thick premium butyl rubber tape primarily used to seal Volclay Ultraseal BT and Swelltite membrane overlap seams where the inherent adhesive face of the tape seals the membrane liner face. Seamtape provides membrane protection from inclement weather prior to backfill or concrete placement, as well as, enhances the performance of the waterproofing system during service. Its outstanding conformability allows the tape to be easily installed on irregular surface conditions.