Base and Ply Sheets

StressBase® 80/120 Base Sheet

Advanced Rubber Technology
High Strength
Security in Multi-Ply Construction

StressBase sheets are high-strength, puncture, and fatigue-resistant, rubber-modified roofing membranes that consist of fiberglass reinforcement sandwiched by Styrene-Butadiene-Styrene (SBS) rubber in a high penetration index asphalt mixture. StressBase sheets can be used as a nailable base sheet over approved substrates, as a base flashing for hot- and cold-applied roof systems, or as an interply in Garland's hot or cold-applied systems. StressBase is typically used in two (2) or three (3) ply modified systems and also can be used in three (3) or four (4) ply BUR's.

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Product Specifications

Method	Description
Hot-Applied	Garland’s StressBase sheets can be used in conjunction with Weatherking® and Green-Lock® to make up a cold-applied system. StressBase sheets can also be used with hot asphalt or Garlastic® as a multi-ply BUR, as the underlayment for Garland’s HPR® roof systems or as a base flashing ply for hot-and-cold applied roof systems. Specifications for nailing to various decks are also available. NOTE: All rolls must be cut in 18 ft. (5.5 m) lengths and allowed to relax prior to application.
Cold-Applied	Garland’s StressBase sheets can be used in conjunction with Weatherking® and Green-Lock® to make up a cold-applied system. StressBase sheets can also be used with hot asphalt or Garlastic® as a multi-ply BUR, as the underlayment for Garland’s HPR® roof systems or as a base flashing ply for hot-and-cold applied roof systems. Specifications for nailing to various decks are also available. NOTE: All rolls must be cut in 18 ft. (5.5 m) lengths and allowed to relax prior to application.

Method

Description

Hot-Applied

Garland’s StressBase sheets can be used in conjunction with Weatherking® and Green-Lock® to make up a cold-applied system. StressBase sheets can also be used with hot asphalt or Garlastic® as a multi-ply BUR, as the underlayment for Garland’s HPR® roof systems or as a base flashing ply for hot-and-cold applied roof systems. Specifications for nailing to various decks are also available. 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	StressBase 80: MD 100 lbf./in. (17.5 kN/m) XD 100 lbf./in. (17.5 kN/m) StressBase 120: MD 100 lbf./in. (17.5 kN/m) XD 100 lbf./in. (17.5 kN/m)
Tear Strength	StressBase 80: MD 110 lbf. (489 N) XD 100 lbf. (444 N) StressBase 120: MD 100 lbf. (444 N) XD 85 lbf. (378 N)
Elongation	StressBase 80: MD 4% XD 4% StressBase 120: MD 4% XD 4%
Low-Temp Flex	passes -40°F (-40°C)

Type	Link
Data Sheets	StressBase 80/120 Technical Data Sheet
SDS	Biflex Cap & Other Rolled Goods Safety Data Sheet
	3 Smooth Rolled Goods US Safety Data Sheet
	3 Smooth Rolled Goods CA Safety Data Sheet English/French

Features

Advanced Rubber Technology

The modifier utilized in StressBase sheets 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.

High Strength

The StressBase membranes are reinforced with fiberglass. The high strength of fiberglass scrim resists the movement created by today's modern buildings. In addition, the fiberglass scrim in StressBase membranes provides adequate tensile strength in the machine and cross-machine direction. This translates to long-term resistance to splits and tears in the modified roof system.

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Security in Multi-Ply Construction

StressBase sheets are the base component of a multi-ply roof system. They combine the inherent advantages and proven performance of multi-ply protection with the strength, flexibility, and elongation of elastomeric systems. This unique combination minimizes dependence on perfect workmanship, contact adhesive seaming, etc.

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Base and Ply Sheets

StressBase® 80/120 Base Sheet

Product Specifications

Technical Data

Application

Physical Properties

Documents

Features

Advanced Rubber Technology

High Strength

Security in Multi-Ply Construction

Related Products

Green-Lock® Plus

Weatherking® / Plus WC Membrane Adhesive

StressPly® Plus/Plus FR Mineral

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