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Sill-Seal is a flexible, non-cross-linked polyethylene strip primarily used to reduce air infiltration between the concrete foundation and sill plate. It works by compressing to seal the gaps between the foundation wall and sill plate.

  • Closed-cell polyethylene foam won’t fall apart on the jobsite or after years of use.
  • Sill-Seal provides excellent resistance to water and water vapor.
  • It is easy to install and does not irritate like fiberglass.
  • Roll: 8”, 10” or 12” wide x 50’ long roll
  • Eco-Friendly alternative to using chemical pesticide treatments.

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