5.2.3 Describe window, skylight and door installation methods, including the preparation of rough openings, careful detailing, flashing and air sealing

  • Foam/tape method
    • Filling the void between the window frame and the rough stud
    • Polyurethane spray foam serves as the air barrier
    • Use low expansion spray foam to avoid excessive pressure on the frame
    • If spray foam is cut and trimmed, additional sealant like tape will be required to ensure a sealed barrier is installed
    • Add tape to the exterior of the foam to seal the sheathing to the window.
  • Plywood wrap method
    • Used for metal and PVC windows
    • Seal wood panel sheathing liner at interior edge to the wall with polyethylene or drywall
    • often uses gaskets and sealants for connections
  • Drywall method
    • Commonly used with wood windows
    • Opening is sealed with drywall caulked to the window frame
    • often uses gaskets and sealants for connections