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- Attic Upgrades and Ventilation - GreenBuildingAdvisor
The 1000-sq -ft attic has two small gable vents, the AC furnace system is 25 years old, the roof is a 6-7 12 pitch covered in clay tiles, and on hot days the attic temperature can reach 130°F 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
- Finalizing insulation in converted conditioned attic
Because the attic sits above an insulated but unconditioned garage, I have ~R-60 of blown in cellulose on the attic floor garage ceiling Since the cavities have 9 5 inches of rafter space, I had originally planned to add R-15 Rockwool batts to the cavities and, potentially, cover all of it with R-6 Rockwool Comfortboard 80
- Air Leaks From Your Home To Your Attic Need To Be Sealed
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 separate attics from the rest of the building When the attic isn’t fully air sealed from the living space and the combustion appliance zone, three undesirable scenarios can occur:
- All About Attic Venting - GreenBuildingAdvisor
One of the interesting things about heat buildup in attics and asphalt shingle warranties tied to the amount of attic venting needed to keep the attic cool, is that I recorded temperatures immediately under shingles between 180 - 190 degrees on south facing slopes and just above ambient temperature under wood shingles
- Is Venting an Unconditioned Attic Necessary?
A reflective metal roof keeps an attic much cooler than passive ventilation Photo courtesy of Cameron Taylor For the second problem, cooling costs, attic ventilation supposedly reduces cooling costs in the house Yes, ventilation can keep the attic cooler, but that doesn’t translate to lower air-conditioning costs
- Installing an ERV in an Unvented Attic - GreenBuildingAdvisor
The attic stale air pickup should be near the ridge because usually the highest humidity is there, this is the air you want to move out of your attic This hot humid air that is pulled out will now be supplied with conditioned air from the house thus indirectly conditioning your attic
- Should I vent my unvented garage attic? - GreenBuildingAdvisor
The house attic is insulated with R-42 open cell foam on the roof deck, and there is currently no insulation in the garage attic The wall between the house attic and the garage attic is drywalled and insulated with R-30 open cell foam on the house side The garage has fire sprinklers, so the garage ceiling will need to be drywalled
- How to Insulate and Air-Seal an Attic Hatch
Even though attic hatches can be huge air leaks and sources of radiant heat loss, they are rarely fixed An attic hatch is usually located in a hallway or closet where the homeowners see it daily Yet… I mean, once the homeowners fire up a blower door and whip out their infrared camera, the problems with attic hatches are pretty obvious
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