🧧 Ready your envelope – Part 5

We’ve been focusing on the forces of nature that cause heat and moisture to go in and out of our houses.

Why it matters: The leakier our envelope —> the less control we have over the conditions inside the house.

  • Envelope = The 6 sides of the house —> ceiling, floor and four walls

📣 Good news!

👏 We can improve leaky houses.

  • Using a variety of air sealing techniques.

⚙️ How it works: Everywhere your house has a connection to the outside can be addressed.

👉 Start with the obvious openings

  • Weatherstripping around exterior doors and crawl space hatches will tighten the house
  • The right attic tent over your attic access is key as well.

👉 Then deal with the sneaky opening

  • Recessed lighting can be sealed with foam or tape to prevent leaking into the attic
  • The top plate (the horizontal board where your wall studs attach) can also be sealed with foam
  • Electrical outlets and light switches are other sources of leaks that can be addressed

✅ For your Smart Homeowner list

  • If you’re not sure where to start, here’s the better news …
  • Tomorrow I’m writing about how we measure the amount your house leaks
  • And how we use different tools to pinpoint the sources



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