Air barrier being applied to low slope roofing

Underlayments

VaporSmart® SA

Aggressive Adhesion
Watertight; Self-Sealing
Up to 6 months temporary roof cover

VaporSmart SA is a self-adhering air barrier/vapor retarder for roof application that can also serve as a temporary waterproofing membrane to be used during a roof system installation. The membrane consists of SBS modified bitumen. The surfacing of the membrane consists of a woven polypropylene film that provides UV resistance, slip resistance, and surface protection that allows the membrane to temporarily be exposed to the elements. The membrane also consists of a split-release film on the backside to aid in the self-adhering application.

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Product Specifications

Physical Property	Value
Tensile Strength	MD 125 lbf./in. (21.89 kN/m) XD 90 lbf./in. (15.76 kN/m)
Tear Strength	MD 175 lbf. (778 N) XD 120 lbf. (534 N)
Elongation	MD 23 XD 20
Low-Temp Flex	MD Pass -25°F (-32°C) XD Pass -20°F (-28°C)

Type	Link
Data Sheets	VaporSmart SA TDS
Benefits	VaporSmart SA Features & Benefits
Application Guidelines	VaporSmart SA Application Guidelines

Features

Temporary Roof Cover

VaporSmart^® SA has a UV-protected top surface which allows it to remain exposed to the elements for up to 180 days. The surfacing is engineered with a high-strength woven polypropylene film that provides impact and slip resistance to withstand foot traffic and ongoing construction.

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Labor Savings

Formulated with SBS-modified asphalt, VaporSmart® SA exhibits best-in-class adhesion to the roof deck and strong lap adhesion (20 pli per ASTM D 1876). The finished membrane is 45 mils thick and 39 inches by 75 feet long, resulting in fewer seams and a faster installation. Compatible with metal decking, VaporSmart® SA is specifically designed to line up with the top flanges of standard Type-B metal decking, with no primer required to adhere to a metal deck.

Watertight performance

The rubberized adhesive exhibits self-healing capabilities and accommodates the use of fasteners, staples, nails, and screws while maintaining a watertight seal. Strong adhesive backing with peel-off split release film is simple to install and ensures a strong watertight seal.

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Underlayments

VaporSmart® SA

Product Specifications

Technical Data

Physical Properties

Documents

Features

Temporary Roof Cover

Labor Savings

Watertight performance

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