spray polyurethane foam, health and safety

Typical Uses for Insulating Foam Sealant

To see some of the common uses for insulating foam sealant, visit the Do-It-Yourselfer of the website.  Follow the safe use and handling instructions on the manufacturer’s label on the can. Here are a few ideas for ways you can use these sealants:

  • Living space:  Seal gapping baseboards, window and door frames, wire and pipe penetrations, air vents, around the sides of (not inside) electrical boxes.
  • Sink plumbing: Seal by filling the gap between the wall and the pipe.
  • Dryer vent:  Seal from either the interior or exterior of the penetration, depending on which has easier access.
  • Basement /Attics: Seal pipe and duct penetrations, plumbing shafts and stacks, wall cracks, sill plates and floor/wall junctions
  • HVAC penetrations (floor registers): Seal between the gap around the floor registers and duct work in the basement.
  • A/C wiring: Seal the gap between the pipe and the wall where the cooling line from the A/C condenser (look for a copper pipe) enters the basement from the outside of the house. It can be found near where the air conditioning unit sits on the ground.
  • Sill plate: Seal around the wood framing of the walls of an unfinished basement where the wood 2” X 4” or 2” X 6” meets the poured concrete foundation wall.
  • Attic Hatch: Seal the attic hatch door from the living space by going into the attic and
    filling the gap between the frame of the attic hatch door and the attic floor.
  • HVAC penetrations (attic registers): Seal between the penetration and duct work from the
    attic registers on the top floor of the house, which will likely be located on the ceiling.

Exterior Uses

 
In addition to the many interior uses of insulating foam sealant, there are many exterior uses for it as well. Here are a few examples:

    Around home
  • Where siding meets the foundation
  • Electrical, gas and A/C penetrations
  • Garage ceiling and wall joints
  • Faucets 
  • Dryer vents

Follow the manufacturer’s instructions for application.  It can be helpful for exterior applications to paint the surface to be treated with black paint (appropriate for outdoor use and the surface selected) to help prevent UV degradation and discoloration of the foam.

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