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Attic Upgrades and Ventilation - GreenBuildingAdvisor 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 insulation He asks if, while the attic is empty, it is a good time to perform other upgrades He is particularly interested in whether mechanical ventilation should be added
Finalizing insulation in converted conditioned attic Hi all: I recently converted the formerly vented attic above my attached garage to an unvented and conditioned attic This attic houses my geothermal air handler, whole house dehumidifier, and […]
Is Venting an Unconditioned Attic Necessary? 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 shortened by higher temperatures, and asphalt shingles do stay cooler with a ventilated attic But the effect is small, with only about six percent reduction in
Should I vent my unvented garage attic? - GreenBuildingAdvisor 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 Northern California in climate zone 3-C (Marine), so mild weather year-round
Why is There Frost in the Attic? - GreenBuildingAdvisor The solution, part 2: venting the attic with outdoor air Another way to reduce the likelihood of getting frost in the attic is to vent the attic with outdoor air Cold air is dry air, so bringing outdoor air in reduces the humidity That in turn reduces the dew point temperature, making condensation and frost in the attic less likely
R38 vs R49 60 attic insulation - GreenBuildingAdvisor I’m trying to get a sense whether its worth adding more insulation to my attic Climate zone 5A Currently has R38 insulation (R11 batt + R27 blown-in fiberglass) The attic […]
Blown Insulation for Attics: Fiberglass vs. Cellulose Blown-in fiberglass consists of milled glass fibers like those used to make fiber-glass batts When it is blown onto an attic floor, it is referred to as loose-fill fiberglass This material has a lower R-value per inch (2 to 2 7) than any other common insulation product, so it’s best applied in an attic that has enough room at the eaves to accommodate insulation installed 16 in to 26 in deep
6 Ways to Improve Ducts in an Unconditioned Attic 6 Keep your attic cooler with a reflective roof or radiant barrier Another way to reduce heat flow into your ducts from a hot, unconditioned attic is to keep the attic cooler The best way to cool your attic is by stopping the heat before it has a chance to enter by using a reflective roof