Base and Ply Sheets

SA Base IV

Low Labor
Ease of Installation
Security in Multi-Ply Construction

SA Base IV is an easy-to-apply, self-adhering, Styrene-Butadiene-Styrene (SBS), fiberglass-reinforced modified bitumen base sheet explicitly designed with the StressPly® IV torch-applied membrane roof system. This strong adhesive backing with a peel-off release film makes this base sheet quick and simple to install, helping to save time and money.

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Product Specifications

Method	Description
Self-Adhered	Before installing base sheets, prime approved roof board with Garland SA Primer. Starting at the low point of the roof, unroll SA Base IV in the desired position. Fold the membrane length-wise back onto itself, remove the split-back release film from the exposed side, and gradually push the membrane into place. Apply even pressure along the entire length of the membrane from the center to outer edges to avoid air pockets or wrinkles. Repeat for the other side. Firmly apply pressure with a suitable weighted roller to ensure 100% adhesion. The base sheets are installed in a shingle fashion throughout the prepared substrate. See SA Base Application Guide for detailed instructions.

Method

Description

Self-Adhered

Before installing base sheets, prime approved roof board with Garland SA Primer. Starting at the low point of the roof, unroll SA Base IV in the desired position. Fold the membrane length-wise back onto itself, remove the split-back release film from the exposed side, and gradually push the membrane into place. Apply even pressure along the entire length of the membrane from the center to outer edges to avoid air pockets or wrinkles. Repeat for the other side. Firmly apply pressure with a suitable weighted roller to ensure 100% adhesion. The base sheets are installed in a shingle fashion throughout the prepared substrate. See SA Base Application Guide for detailed instructions.

Physical Property	Value
Tensile Strength	MD 75 lbf./in. (13 kN/m) XD 50 lbf./in. (9 kN/m)
Tear Strength	MD 105 lbf. (467 N) XD 100 lbf. (445 N)
Elongation	MD 5% XD 5%
Low-Temp Flex	0°F (-18°C) Pass

Type	Link
Data Sheets	SA Base IV Technical Data Sheet
Benefits	SA Base IV Benefits
Application Guidelines	SA Base IV Application Guideline

Features

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Base and Ply Sheets

SA Base IV

Product Specifications

Technical Data

Application

Physical Properties

Documents

Features

Security in Multi-Ply Construction

Low Labor

Ease of Installation

Related Products

StressPly® IV Plus / IV Plus Mineral / IV Plus UV Mineral

Pro-Stop™ FR

Tuff-Stuff® MS Sealant

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