FlexBase Plus 80 is an 80-mil membrane with a fiberglass/polyester reinforcement sandwiched by Styrene-Butadiene-Styrene (SBS) in a high penetration index asphalt mixture. The result is a high strength, puncture, and fatigue-resistant rubber-modified base sheet designed for application as the interply waterproofing and reinforcement layer of a modified or built-up roof system. It provides long-term performance in all types of new or retrofit construction uses. FlexBase Plus 80 can be used as the initial underlayment for any Garland HPR® roof system, used in conjunction with Weatherking® and Green-Lock® for a cold-applied system or used with hot asphalt or Garlastic® as a multi-ply BUR. It can also be used as a base flashing or interply in Garland’s for hot- or cold-applied systems.
