But the effect is small, with only about six percent reduction in Nov 19, 2024 · 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 carpenter installed knee walls at 35 inches. Jan 9, 2019 · Loose-fill fiberglass attic insulation was shown to lose up to half its R-value in a study from the early 1990s. Air leakage is reduced by encapsulating the attic. He is particularly interested in whether mechanical ventilation should be added. The home is located in Northern California in climate zone 3-C (Marine), so mild weather year-round. Shingle life can be shortened by higher temperatures, and asphalt shingles do stay cooler with a ventilated attic. Dec 6, 2013 · A rundown of reasons why venting an attic makes sense and how it can prevent issues that negatively impact a house's performance. . Some attics have a triangular cross section, like the attics behind the kneewalls on the second floor of a Cape. Jun 29, 2023 · Venting an attic in cooling season The warm-climate, summertime problems of shingle life and cooling costs also show little improvement from attic ventilation. Thermal bridging is reduced by spraying over the rafters. Because the existing 2×6″ collar ties were only halfway […] Jan 19, 2025 · Hi all: I recently converted the formerly vented attic above my attached garage to an unvented and conditioned attic. Attic kneewalls often cause big comfort problems in homes. Sep 12, 2014 · The classic attic is located above a flat ceiling and has the same footprint as the house below. Aug 21, 2013 · There you have it. [Photo credit: Energy Vanguard] When you get into the world of building science, it’s inevitable that you’ll hear about the Oak Ridge study proving that fiberglass insulation loses about half its R-value. Jun 9, 2025 · After early framing help from a capenter, I’m taking on an attic renovation. Sep 30, 2024 · 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. Some attics are smaller than the footprint of the house, like the attic above the second floor ceiling of a Cape. He asks if, while the attic is empty, it is a good time to perform other upgrades. Sep 12, 2014 · The classic attic is located above a flat ceiling and has the same footprint as the house below. This attic houses my geothermal air handler, whole house dehumidifier, and […] Nov 24, 2022 · Attic insulated with spray foam at the roofline. Getting them right is fairly straightforward but takes time and attention to detail. By encapsulating the attic, the air in that space will be close to indoor conditions of temperature and humidity, but there won’t be any cold surfaces for water vapor to condense on. The results are worth it, though, in happy clients, lower energy bills, and personal satisfaction that you’re doing great work.

jfynv
i5xgx
xxacq
4vhtsjv
fehk6h
zdq2wu
8qlqqp
m8hipr5
cn6o71vmj3
woiwydxb3bi