• Stego® Mastic for pipe penetrations: strong, flexible, and vapor resistant. Available in multiple sizes for varied applicatio
  • Stego® Mastic for Pipe Penetrations: Strong, flexible, and vapor resistant concrete moisture barrier sealer for construction
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Stego Mastic - Seal Pipe Penetrations & Terminating Edges

Stego Mastic - Seal Pipe Penetrations & Terminating Edges

STEGO INDUSTRIESSKU: PR9

$249.99
$275.40 $249.99
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Product Details

VAPOR SEAL - STEGO® MASTIC FOR PIPE PENETRATIONS

Stego® Mastic is a high-performance liquid-applied vapor retardant membrane designed to complement Stego Wrap vapor barriers and retarders. This concrete moisture barrier sealer provides robust resistance against moisture and gas ingress, crucial for maintaining the integrity of construction projects. Ideal for sealing utility and pipe penetrations, Stego Mastic ensures a seamless, efficient application, especially beneficial for professionals seeking a reliable solution in challenging environments.

Available in 20-ounce sausage tubes and 2 or 5-gallon pails, Stego® Mastic offers flexibility for both small repairs and larger installations. Its water-based, trowel-grade asphaltic emulsion makes it easy to apply with a standard sausage gun or by brush, roller, or trowel. Perfect for the dedicated concrete worker, this product delivers strength, flexibility, and durability, meeting ASTM standards for a superior vapor barrier solution.

  • Strong, Flexible, and Vapor Resistant
  • Available in multiple sizes for varied applications
  • Meets ASTM E1643 installation standards
  • Water-based asphaltic emulsion
  • Easy application with standard tools
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Product Specification
Stego® Mastic for pipe penetrations: strong, flexible, and vapor resistant. Available in multiple sizes for varied applicatio
Details
Product Name
Stego Mastic
Description
A water-based, medium-viscosity, polymer-modified anionic asphalt emulsion used to seal permanent penetrations of Stego Wrap, especially small pipes, pipe clusters, and terminating edges.
Tensile/Elongation, ASTM D412
32 psi, 3860%
Resistance to Decay, ASTM E154
10% perm loss
Permeance, ASTM E96
0.17 perms
Hydostatic Water Pressure, ASTM D751
28 psi
Adhesion to Concrete & Masonry, ASTM C836
7 lbf/in2
Hardness, ASTM C836
No cracking
Low Temp Flexibility, ASTM C836
No cracking
Additional Benefits
Alternative to boots for pipe penetrations in Stego WrapQuickly seals around penetrations, especially pipe clustersEasy application using sausage tubes, brushes, rollers, or trowelsAvailable nationwide
ASTM D412
Standard Test Method for Vulcanized Rubber and Thermoplastic Elastomers Tension
ASTM E154
Standard Test Methods for Water Vapor Retarders used in Contact with Earth under Concrete Slabs, on Walls, or as Ground Cover
ASTM E96
Standard Test Methods for Water Vapor Transmission of Materials
ASTM D751
Standard Test Methods for Coated Fabrics
ASTM C836
Standard Specification for High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane for use with Separate Wearing Course
ASTM E1643
Standard Practice for Installation of Water Vapor Retarders used in Contact with Earth or Granular Fill under Concrete Slabs
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