How is XPS installed and fastened?

Installation method depends on the application:

  • Below-Grade: Typically adhered directly to the foundation wall with compatible adhesives or mechanically fastened during the backfill stage. Protection boards are often used.
  • Above-Grade Walls: Can be adhered, mechanically fastened with plastic cap nails/washers, or a combination of both.
  • Roofs: Often laid loose-loaded or adhered in inverted roof assemblies.
  • Cutting: Can be easily cut with a utility knife, fine-tooth saw, or hot wire.


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