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Base and Ply Sheets

FlexBase® E 80

  • Advanced Rubber Technology
  • Superior Performance Characteristics
  • Superior Strength

FlexBase E 80 is an 80-mil, SBS rubber-modified base sheet that utilizes KEVLAR® fibers and a dual polyester and fiberglass combination reinforcement that offers inherent strength and heat stability of fiberglass, along with the ability of polyester to conform. The result is a high strength, puncture, and fatigue resistant, rubber modified base sheet designed for application as the interply åwaterproofing and reinforcement layer of a modified or built-up roofing system. It provides long-term performance in all types of new or retrofit construction uses. FlexBase E 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 hot- or cold-applied systems.

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Product Specifications


Product Page Feature Photos

Superior Strength

FlexBase E 80 is reinforced with one layer of fiberglass and polyester. The superior strength provided by the KEVLAR fibers and the dual fiberglass and polyester combination resists the movement created by today's modern buildings. In addition, FlexBase E 80 provides tensile strength in excess of 500 pounds per inch (8929 kg/m) in the machine and cross-machine direction. This translates to long-term resistance to splits and tears in the completed roof system. 

Product Page Feature Graphic

Advanced Rubber Technology

The modifier utilized in FlexBase E 80 is SBS ( Styrene-Butadiene-Styrene). When the SBS rubber is properly dispersed throughout the high-penetration asphalt, the rubber provides increased thermal shock resistance, UV protection, heat resistance, elongation, and low-temperature flexibility. A special high-shear mixer is used in manufacturing to ensure proper dispersion. 

Quality Control Feature Photo

Superior Performance Characteristics

FlexBase E 80 exceeded the requirements of ASTM D 4601 by more than 50%. FlexBase E 80 imparts the strength and flexibility your roof requires to stand up to and overcome the elements. 

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RMer Span Curve Panels are being installed onto the North County Regional Library