Viper Vapor Patch - 11.5" X 50' - Box of 5 rolls

Viper Vapor Patch - 11.5" x 50'

Viper Vapor Patch is a heavy-duty, self-adhering vapor barrier patch and pipe boot designed to seal pipe penetrations and repair plastic-type vapor barriers. It combines the durability of Viper VaporCheck 10-mil material with a high-performance all-weather acrylic adhesive, making it ideal for use in a wide range of jobsite conditions.

Contractors use Viper Vapor Patch in crawl spaces, basements, and under-slab applications to maintain vapor barrier continuity around pipes and damaged sections. The roll includes printed templates for pipe diameters from 1 in. to 8 in., spaced every 12 in. for fast and accurate cutting. Its strong tack ensures reliable adhesion in temperatures from -20°F to 180°F, even in damp or humid conditions.

This patch is easy to apply—just cut, wrap, peel the backing, and press into place. For added protection, exposed areas can be sealed with VaporCheck Mastic or Viper Vapor Tape. Built for long-lasting moisture control, Viper Vapor Patch is a reliable solution for new installations and repairs.

Features

• Self-adhering patch for vapor barrier repair and sealing.
• Integrates Viper VaporCheck 10-mil material for durability.
• All-weather acrylic adhesive bonds in hot, cold, or humid conditions.
• Pre-printed pipe diameter templates for fast cutting and fitting.
• Fits pipe penetrations from 1 in. to 8 in. diameter.
• Works on all plastic-type vapor barriers.
• Retains strong tack in temperatures from -20°F to 180°F.
• Ideal for crawl spaces, basements, and under-slab installations.
• Easy peel-and-stick application—no tools required.
• Use with VaporCheck Mastic or Viper Vapor Tape for complete sealing.