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Vapormat Channeling Mat 48" x 50' x 0.4" Thick (66105) Vapor Barrier

Model #: 66105

Condition: New


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The 0.4" thick VAPORMAT™ Radon & Moisture Mitigation Channeling Systems can be used for easy-to-install, time-saving drainage and air flow beneath the vapor barrier

Radon Tee and Vapormat image
  • Size: 4' x 50' x 0.4" thick
  • Reduces radon, moisture and other toxic vapor levels in the living space of a home
  • Reduces the potential for mold and mildew problems
  • Maintains air flow communication across grade beams, downturns, footers and distant corners
  • Reduces the need for an exhaust fan or basement humidifier reducing lifetime energy costs
  • Easy installation, saving time and money over other options
  • Complies with building codes: IRC Appendix F, RRNC 2.0 and ASTM E-1465
  • LEED V4 Building Design and Construction Materials and Resource Credit 3 (1-2 Points)
  • Greater than 40% recycled pre-consumer material
  • Manufactured in USA

0.8" thickness also available (Item #66106)

Optional add-on items:

  • Vapormat 11 gauge Steel 6" x 1" Staples (66107) 500 Per Box.
  • Vapor Barrier Tape 4" x 108' (68017) Black 10mil.
  • Vapor Barrier Tape 4" x 108' (68066) White 9mil.
  • White Eternabond Leak Repair Tape (68086) Double Sided 2x50.
  • Vapor Barrier x-Mas Tree Fasteners .250"x.80" (27055) 100 Pack.


  1. Roll out the VAPORMAT™ (green side faces the earth) on the sub grade after the final preparation and if there will be concrete, before the concrete is poured. Typical layout is in the form of a rectangular loops in the largest areas with branches into the smaller areas. However, the actual layout will be dictated based on site specific dimensions and conditions.
  2. Position the Radon‐T (P/N 28353) in appropriate location and nail down through the molded in holes with the four (4) 6‐inch steel spikes provided in the Radon‐T Kit.
  3. Lay the VAPORMAT™ over the Radon‐T and cut a circular hole in the VAPORMAT™ where the riser pipe will be installed. Secure the VAPORMAT™ to the sub grade using VAPORMAT™ Staples (P/N 66107) or 6‐inch steel spikes.
  4. Roll out the VAPORMAT™, flatten it as much as possible onto the sub grade, stapling it to the ground as you roll it out. The VAPORMAT™ should be stapled to the ground every 3 to 4 feet, in addition to the splices, corners and T junctions.
  5. Splices, corners and T junctions are connected by overlapping the VAPORMAT™ a minimum of length equal to or greater than the width (i.e., 15 inches). Staple through the upper and lower strips of the VAPORMAT™ strips, using a minimum of four staples at each corner— two to anchor the bottom and two to anchor the bottom layer into the sub grade. It is recommended that vapor barrier tape (P/N 68066 or 68017, or equivalent) be placed over the seam(s).
  6. It is recommended that all openings in the fabric at splices, corners and T junctions of the VAPORMAT™ be taped (vapor barrier tape  P/N 68066, 68017 or equivalent); however this is not required where the VAPORMAT™ will be overlain by a vapor barrier.
  7. When the structure is ready for the soil gas vent pipe to be installed, the 4‐inch plug is removed from the Radon‐T and a 4‐inch pipe is glued to the Radon‐T. If vapor barrier is installed, tape should be used to attach to vertical pipe, then a bed of sealant should be applied around the pipe/barrier joint. This process also is used when VAPORMAT is used without vapor barrier.

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