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Stego® Mastic - Seal Pipe Penetrations & Terminating Edges

SKU PR9
Save $25.41
Original Price $275.40
Current Price $249.99

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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
PRODUCT SPECIFICATIONS
Product Name Stego Mastic
Description A water-based, medium-viscosity, polymer-modified anionic asphalt emulsion. It can be used to seal permanent penetrations of Stego Wrap quickly and easily, especially small pipes, between pipe clusters, and terminating edges.
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
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 Wrap. Quickly seals around penetrations, especially pipe clusters. Easy application from sausage tubes with a standard sausage gun and/or from pails by brush, roller, or trowel. Available nationwide
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⚠ WARNING: Some products on this site can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.