Viper Vapor Patch - 11.5" X 50'
SKU: 211895
| MPN: VPTP11550
SKU: 211895
| MPN: VPTP11550
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.
Specification | Details |
---|---|
Substrate thickness | 10 mil |
Adhesive thickness | 3 mil |
Peel adhesion | 55 oz/in |
Shear adhesion | >24 hrs @ 22 PSI |
Classification | ASTM E 1745 – Exceeds Class A, B, C |
Puncture resistance | 15,839 grams (ASTM D 1709) |
Tensile strength (new material) | 136 lbf/in (MD), 134 lbf/in (TD) – ASTM 154 Sec. 9 |
Tensile strength (after soaking) | 140 lbf/in (MD), 133 lbf/in (TD) – ASTM 154 Sec. 9 |
Operating temperature range | -20°F to 180°F |
Water vapor permeance | 0.0016 perms – ASTM E 96 / 154 Sec. 7 |
Water vapor transmission rate | 0.00058 grains/(ft²·hr) – ASTM E 96 / 154 Sec. 7 |