
Understanding the Energy Code: The 2021 IECC Attic Insulation ...
Sep 12, 2025 · Learn the requirements for residential attics in different climate zones, the impact on energy efficiency, and the importance of proper insulation installation.
All About Attics - GreenBuildingAdvisor
Sep 12, 2014 · The classic attic is located above a flat ceiling and has the same footprint as the house below. Some attics are smaller than the footprint of the house, like the attic above the second floor …
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 …
Attic ventilation: Is it ok to have WAY more intake than exhaust ...
Oct 28, 2024 · The total ventilation would exceed the attic floor area divided by 150, so does that mean it should be ok to have “unbalanced” ventilation? I am in southern Maryland in climate zone 4, btw. I …
Is Venting an Unconditioned Attic Necessary?
Jun 29, 2023 · Venting an attic in cooling season The warm-climate, summertime problems of shingle life and cooling costs also show little improvement from attic ventilation. Shingle life can be …
All About Attic Venting - GreenBuildingAdvisor
Dec 6, 2013 · A rundown of reasons why venting an attic makes sense and how it can prevent issues that negatively impact a house's performance.
Air Leaks From Your Home To Your Attic Need To Be Sealed
Jul 3, 2014 · It’s important to keep attic air out of the house and house air out of the attic. That's why the home performance industry and every above-code building program make it a top priority to fully …
Air flow between garage attic and house attic - GreenBuildingAdvisor
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 separated by …
Solving Comfort Problems Caused by Attic Kneewalls
Aug 21, 2013 · In the world of building science, we call them attic kneewalls — walls that separate conditioned space from an unconditioned attic. They’re also the cause of many comfort problems, …
Problems with Attic Trusses - GreenBuildingAdvisor
Feb 14, 2024 · Attic trusses, sometimes called room trusses, are factory-built systems that simplify a roof build-out and are engineered to meet the structural requirements of local codes and conditions.