Stego® Mastic — 20 oz Sealant Tube

Stego® Mastic — 20 oz Sealant Tube for Penetrations & Repairs

Stego® Mastic is a medium-viscosity, water-based, polymer-modified sealant designed for use with StegoCrawl Wrap vapor barriers. The 20 oz sausage tube format works with standard mastic applicator guns for precise, waste-free application. Ideal for sealing pipe penetrations, utility entries, repairs, and small installations.

Product Details

• Size: 20 oz sausage tube
• Composition: Water-based, polymer-modified anionic bituminous/asphalt emulsion
• Application: Standard caulking/mastic gun (sold separately)
• Also Available: 2-gallon and 5-gallon pails for larger projects

Applications

• Sealing utility and pipe penetrations through vapor barriers
• Vapor barrier repairs and patching
• Terminating edges of vapor barrier material
• Small encapsulation installations
• Replaces the need for boots at pipe penetrations when used with StegoCrawl Wrap

Key Benefits

• Helps achieve ASTM E1643 compliant installations
• Precise application with sausage tube format — no waste
• Quickly seals around penetrations
• Water-based formula for easy cleanup

Part of the complete StegoCrawl encapsulation system available at RadonDepot.ca.