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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
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
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:
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
How to Insulate and Air-Seal Pull-Down Attic Stairs Pull-down attic stairs are super-sized attic hatches that just beg homeowners to store more stuff in their attic Besides the air-leakage and insulation problems stemming from having a particularly large hole in your ceiling, pull-down stairs creates a potential storage headache For homeowners, a storage problem usually means “not enough space ” For energy auditors, a storage problem
Minisplit in an Unconditioned Attic - GreenBuildingAdvisor An HVAC contractor has taken a look at the house and has a recommendation, Inverter explains in this Q A post: install two Mitsubishi SEZ model ducted minisplits in the attic One will cool the master bedroom, the other will cool the two bedrooms where Inverter’s children sleep There’s one snag The attic at Inverter’s house is
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
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⁄
How to Air-Seal an Attic Access - GreenBuildingAdvisor The attic hatch here is mostly an upside down polyiso box with weatherstripping at the bottom The wooden folding attic stairs (ladder) fits inside the box when lifted into the ceiling attic The box is sealed by using two velcro straps at either end, connecting the box to the attic floor