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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 Attics - GreenBuildingAdvisor Most six-year-olds can draw a house The typical child’s depiction of a house shows a rectangular building with a door and a few windows, topped by a gable roof This type of house is fairly common in most areas of the U S If the house was built 100 or more years ago, it usually had a cellar or basement underneath the first floor and an attic above the top floor
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
Fans in the Attic: Do They Help or Do They Hurt? Attic Fan (roof mounted type) and ceiling shutters ? When I was about 16 my father installed an Attic power vent fan We had a small house about 1000sf The house had a removable cover to get into the attic If the entrance cover was left open, and the fan came on You could fell the rush of air being pulled into the attic Present day
Blown Insulation for Attics: Fiberglass vs. Cellulose 1500-sq -ft attic Numbers vary by manufacturer, but according to CertainTeed’s table, you need a minimum insulation thickness of 181⁄ 2 in and at least 25 2 bags of insulation per 1000 sq ft Adjust the bag count to your attic’s area: (25 2 x 1500) ÷ 1000 = 37 8 bags If your contractor installs less than 181⁄
Are Powered Attic Ventilators Ever a Good Idea? There is no vapor or reflective barrier on the attic ceiling, just wood and nails During the day our house stays relatively cool with all the windows closed But come around 7pm until about 11pm it’s hotter inside than out (all windows open now), and from a thermal camera it looks like the attic is dumping stored heat down into the house
All About Attic Venting - GreenBuildingAdvisor A No, although potential moisture problems in imperfectly vented attics can be disguised by the presence of leaky attic ducts (Leaky attic ducts can help dry out attic air by heating the attic in winter and dehumidifying the attic in summer, assuming that the house has central air conditioning
Fixing Attics With Vermiculite Insulation - GreenBuildingAdvisor If you're under the impression that natural insulation materials are the safest ones to use, it might be time to think again Vermiculite is a natural insulation material — but it’s one that you definitely don’t want to have in your attic Vermiculite is a mineral mined from the earth, composed of shiny flakes that look like mica When this mineral is put in an oven, it expands like
A New Look at Conditioned Attics - GreenBuildingAdvisor The problem is attic ductwork The main reason that anyone talks about conditioned attics is that some builders want to install ducts in the attic Installing ducts in an attic is a bad idea, but many builders don’t know that While locating ducts in an attic reduces installation costs for the builder, it increases energy costs for the homeowner