DyPerm Tape: Vapor Barrier Tape (zero perm vapor retarder)

3-Part Specifications per Construction Specification Institute (CSI)

DyPerm® Vapor Barrier Tape 3-part CSI Specification. Zero-perm tape to secure zero perm vapor barrier sheet seams. Used in conjunction with DyPerm Wrap over polyisocyanurate insulation, in low temperature applications.