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  1. Venting Bathroom Exhaust Air - GreenBuildingAdvisor

    Jul 25, 2024 · Exhaust air from bathroom fans should never be ducted into an attic but rather to a point outside the building enclosure.

  2. Should I vent my unvented garage attic? - GreenBuildingAdvisor

    Nov 19, 2024 · I’m building a new single-story single-family house with an unvented attic and am looking for input on how to address my attached unvented garage attic. The home is located in …

  3. Ducts in an Unconditioned Attic - GreenBuildingAdvisor

    Feb 12, 2021 · Running unprotected ductwork through an attic can court problems. Particularly in hot-humid climates, moisture can collect on the outside of ducts in summer. Encapsulating …

  4. Air flow between garage attic and house attic

    Apr 21, 2025 · The garage wall and ceiling have fire-rated drywall. There is an attic space above the garage and an attic space above the house. Currently, these two attic spaces are …

  5. 6 Ways to Improve Ducts in an Unconditioned Attic

    Jul 22, 2021 · Ducts in an unconditioned attic can be a huge liability for energy efficiency, comfort, and indoor air quality. If you can't get them into conditioned space, you can still improve their …

  6. Attic Upgrades and Ventilation - GreenBuildingAdvisor

    Sep 30, 2024 · BGG had an energy audit done, which informed his plan to remove the existing fiberglass batts, air-seal the attic, install a ducted heat pump system, then blow in cellulose …

  7. Ductwork in an Unconditioned Attic - GreenBuildingAdvisor

    Jun 12, 2017 · A look at how to manage issues that arise with HVAC equipment and ductwork in an unconditioned attic.

  8. Does Spray Foam in the Attic Make It a High-Performance Home?

    May 27, 2021 · Where an R-20 encapsulated attic does sometimes make sense is for existing homes. If a homeowner has a set budget for improvements, using some of that to do R-20 …

  9. Controlling Humidity in an Attic with Spray Foam Insulation

    Jul 29, 2021 · When you encapsulate the attic with spray foam insulation and don’t do anything to condition the air in the attic, the humidity can get very high. It also stratifies, with the highest …

  10. Will positive pressure work to vent an attic (i.e., blowing air in ...

    Aug 12, 2012 · My father is interested in removing heat from his attic to try to keep the upstairs of his house somewhat cooler. I have advised him that generally speaking, attic fans are a bad …