Soil Gas Retarders

  • Any seams in soil gas retarder membranes must be overlapped at least 12 inches and sealed in a permanent air tight manner using compatible glues.
  • The membrane must also be sealed around interior piers and to the inside of exterior walls with furring strips and compatible glues.
  • The sheeting should cover the entire floor area with separate sections of sheeting overlapped at least 12 inches.
  • The sheeting should fit closely around any pipe, wire or other penetrations of the material.
  • All punctures or tears in the material should be sealed or covered with additional sheeting.
  • 422.160(e)(3)