Viper II 15-mil is a unique high strength polyolefinbased under-slab vapor barrier specifically designed for preventing moisture migration through concrete slabson-grade. Viper II 15-mil reduces water vapor emission transfer and moisture migration from entering the building envelope on commercial, industrial and residential applications. Viper II 15-mil controls condensation, mold, mildew, degradation and prevents costly flooring failures and damage to moisture sensitive furnishings within a building’s interior. Viper II 15-mil may be used to reduce radon and methane gas migration and is resistant to other adverse soil conditions.

COMPOSITION & MATERIAL

SIZE
Standard Size: 14’ x 140’ rolls
WEIGHT
Approximately 140 lbs per roll
BENEFITS
• Manufactured using multi-layer extrusion technology
from virgin polyolefin resin
• Maintains long-term performance after exposure to
adverse soil conditions
• Exceeds ASTM E 1745 “Class A” guidelines
• High puncture and tensile strength
• Greatly reduces moisture migration through slab-on-grade
applications
TECHNICAL DATA
APPLICABLE STANDARDS
American Society for Testing & Materials (ASTM)
ASTM E 1745 Standard Specification for Plastic Water
Vapor Retarders Used in Contact with Soil or Granular Fill
Under Concrete Slabs
ASTM E 154 Standard Test Methods for Water Vapor
Retarders Used in Contact with Earth Under Concrete Slabs,
on Walls or as Ground Cover
ASTM D 1709 Standard Test Methods for Impact Resistance
of Plastic Film by the Free-Falling Dart Method
ASTM D 882 Standard Test Method for Tensile Properties
of Thin Plastic Sheeting
ASTM F 1249 Standard Test Method for Water Vapor
Transmission Rate Through Plastic Film and Sheeting
Using a Modulated Infrared Sensor
ASTM E 96 Standard Test Methods for Water Vapor
Transmission of Materials
ASTM E 1643 Standard Practice for Selection, Design,
Installation, and Inspection of Water Vapor Retarders
Used in Contact with Earth or Granular Fill Under
Concrete Slabs
ACI 302.2R-06 Guide for Concrete Slabs that Receive
Moisture-Sensitive Flooring Materials
NOTE: All Viper II 15-mil testing is done by accredited,
third-party testing agencies following stringent industry
guidelines and testing standards.
ENVIRONMENTAL CONSIDERATIONS
Viper II 15-mil can aid in controlling soil gas and poisons
such and methane and radon.
PHYSICAL PROPERTIES
Viper II 15-mil exceeds all ASTM E 1745 “Class A”
requirements for under-slab vapor retarders.
INSTALLATION
SUB-GRADE PREPARATION
Level and tamp or roll granular base as specified by the
architectural or structural drawings.
VAPOR BARRIER PLACEMENT
Unroll Viper 15-mil with the longest dimension parallel
with the direction of the pour. Unfold to full width.
Extend Viper 15-mil over footings and seal to foundation
wall, grade beam or slab at an elevation consistent with
the top of the slab or terminate at impediments, such as
water stops or dowels. Use Viper Double Bond Tape or a
combination of Viper Double Bond Tape and Viper Vapor
Tape at such termination

 **For Pricing from 2 pallets to Truckload Quantities please Contact us @  Quotes@whittco-llc.com  or Joshua @ 972-853-1220**