Sealing the Building Envelope of a Home: Construction Tips

TLDR The video provides detailed insights into the process of sealing the building envelope of a home during construction, covering various areas of concern and techniques for effective air sealing. It also discusses the importance of the fan pressurization test in measuring the tightness of a building.

Key insights

  • ⚙️
    Air sealing during construction is cost-effective for builders and ensures energy savings and comfort for homeowners.
  • 🏠
    Common areas for concern during air sealing include gaps between subfloor sheets, attic access covers, joint between subfloor and plaster, sliding doors, window and door jambs, and penetrations into the building envelope.
  • 🔍
    Techniques for air sealing include using adhesives, weather stripping, caulking, backer rods, expandable foam, gaskets, and caulking for various areas and penetrations.
  • 🌬️
    Identifying and avoiding areas that do not leak air is important to avoid wasting time and materials during the air sealing process.
  • 🛠️
    The fan pressurization test is a crucial method for measuring the tightness of a building and identifying major air leaks.
  • 📏
    Measuring the rate of air leak in air changes per hour using a large fan and support bracket helps in assessing the effectiveness of the air sealing process.
  • 👷
    Staying on top of the sealing work throughout construction is important, and techniques such as using smoke producing devices or hand sensing airflow can help in identifying air leaks.
Play video
This article is a YouTube summary of the video "Sealing the Building Envelope" by Green Building Institute.