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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
Will positive pressure work to vent an attic (i. e. , blowing air in . . . My father is interested in removing heat from his attic to try to keep the upstairs of his house somewhat cooler I have advised him that generally speaking, attic fans are a bad idea, which he has come to terms with However, with that understanding that creating negative pressure in the attic can cause all kinds of problems (sucking out air from the conditioned space, possible back-drafting
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 […]
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
Attic remodel sistering rafters - GreenBuildingAdvisor After early framing help from a capenter, I’m taking on an attic renovation The carpenter installed knee walls at 35 inches Because the existing 2×6″ collar ties were only halfway […]
Solving Comfort Problems Caused by Attic Kneewalls There you have it Attic kneewalls often cause big comfort problems in homes Getting them right is fairly straightforward but takes time and attention to detail The results are worth it, though, in happy clients, lower energy bills, and personal satisfaction that you’re doing great work
Insulation in an attic - GreenBuildingAdvisor I am trying to insulate an attic room in a one hundred year old house The roof rafters are 2x 4s that are actually 2 x 4,5 inches of rough cut lumber on 24 inch centers The attic is 20 feet wide I plan to install knee walls so the finished space will be 13 feet wide I plan to install battens to maintain 1 inch of ventilation space under the XPS foam that will be installed between the
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
Controlling Humidity in an Attic with Spray Foam Insulation Using an exhaust fan in an encapsulated attic Since that time, we’ve been experimenting with ways to keep the attic humidity low One of the methods we’ve tried is using a small fan to exhaust air from the attic If the attic is properly sealed to the outdoors (and many spray foam attics aren’t), the replacement air comes from the conditioned space below the attic and is cool and dry