Wall Top Plate and Utility Penetrations

Materials/Tools Needed

  • Spray foam (spray can or two-part) and/or polyurethane sealant
  • 10 mil polyethylene sheet or flexible gasket or tape
  • Acoustic sealant

Homeowner Tips

If performing renovations where new wiring or plumbing stacks are added through the ceiling, ensure a similar procedure is followed for air sealing.