Base and Ply Sheets

FlexBase® 80

Advanced Rubber Technology
Extraordinary Strength
Security in Multi-Ply Construction

FlexBase 80 is a high-strength, puncture, and fatigue-resistant, rubber-modified roof membrane designed for the waterproofing and reinforcement layer of a built-up or modified roofing system. It consists of two layers of fiberglass reinforcement sandwiched by Styrene-Butadiene-Styrene (SBS) rubber in a high penetration index asphalt mixture. FlexBase 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

Method	Description
Hot-Applied	FlexBase 80 can be used as the initial underlayment for any Garland HPR® roof system. Specifications for nailing to various decks are available. In addition, FlexBase sheets are used as the underlayment in Garland’s two (2) or three (3) ply hot asphalt or cold-applied Weatherking and Green-Lock systems and also can be used in three (3) or four (4) ply BUR’s. NOTE: All rolls must be cut in 18 ft. (5.5 m) lengths and allowed to relax prior to application.
Cold-Applied	FlexBase 80 can be used as the initial underlayment for any Garland HPR® roof system. Specifications for nailing to various decks are available. In addition, FlexBase sheets are used as the underlayment in Garland’s two (2) or three (3) ply hot asphalt or cold-applied Weatherking and Green-Lock systems and also can be used in three (3) or four (4) ply BUR’s. NOTE: All rolls must be cut in 18 ft. (5.5 m) lengths and allowed to relax prior to application.

Method

Description

Hot-Applied

FlexBase 80 can be used as the initial underlayment for any Garland HPR® roof system. Specifications for nailing to various decks are available. In addition, FlexBase sheets are used as the underlayment in Garland’s two (2) or three (3) ply hot asphalt or cold-applied Weatherking and Green-Lock systems and also can be used in three (3) or four (4) ply BUR’s. NOTE: All rolls must be cut in 18 ft. (5.5 m) lengths and allowed to relax prior to application.

Cold-Applied

Physical Property	Value
Tensile Strength	MD 225 lbf./in. (39 kN/m) XD 225 lbf./in. (39 kN/m MD 240 lbf./in. (42 kN/m) XD 220 lbf./in. (38 kN/m)
Tear Strength	MD 300 lbf. (1335 N) XD 300 lbf. (1335 N)
Elongation	MD 7.0% XD 7.0%
Low-Temp Flex	passes -30°F (-34.4°C)

Type	Link
Data Sheets	FlexBase 80 Technical Data Sheet
SDS	FlexBase 80 & Other Rolled Goods Safety Data Sheet
SDS	Glass Rolled Goods Safety Data Sheet

Features

Advanced Rubber Technology

When the SBS rubber in the FlexBase 80 sheet 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.

Extraordinary Strength

FlexBase 80 is reinforced with two layers of fiberglass. The strength provided by the dual fiberglass scrim resists the movement created by today's modern buildings. In addition, the dual fiberglass scrim in FlexBase sheets provides tensile strength in excess of 200 lbs. per inch (3572 kg/m) in the machine and cross-machine direction. This translates to long-term resistance to splits and tears in the completed roof system.

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Security in Multi-Ply Construction

FlexBase 80 is the base component of a multi-ply roof system. It combines the inherent advantages and proven performance of multi-ply protection with the strength, flexibility, and elongation of elastomeric systems. This unique combination minimized dependence on perfect workmanship, contact adhesive seaming, etc.

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Base and Ply Sheets

FlexBase® 80

Product Specifications

Technical Data

Application

Physical Properties

Documents

Features

Advanced Rubber Technology

Extraordinary Strength

Security in Multi-Ply Construction

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