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- Can too much soffit and ridge ventilation actually hurt a house if the . . .
In a poorly sealed house roof venting can increase the stack effect - meaning more air entering the house at the base, and exiting into the attic That's why the recommendation is to have more vents at the soffits than at the peak, which slightly pressurizes the attic, reducing exfiltration
- 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
- Venting Bathroom Exhaust Air - GreenBuildingAdvisor
Exhaust air from bathroom fans should never be ducted into an attic but rather to a point outside the building enclosure
- Ducts in an Unconditioned Attic - GreenBuildingAdvisor
Running unprotected ductwork through an attic can court problems Particularly in hot-humid climates, moisture can collect on the outside of ducts in summer Encapsulating ducts in closed-cell foam or following code-prescribed methods for burying ducts in insulation can prevent the problem Illustration courtesy Home Innovation Research Labs
- Why is There Frost in the Attic? - GreenBuildingAdvisor
Attic insulated with spray foam at the roofline Thermal bridging is reduced by spraying over the rafters Air leakage is reduced by encapsulating the attic 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
- 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
- Does Spray Foam in the Attic Make It a High-Performance Home?
Where an R-20 encapsulated attic does sometimes make sense is for existing homes If a homeowner has a set budget for improvements, using some of that to do R-20 spray foam on the roofline can provide a lot of benefit if ducts are in the attic and if it reduces air leakage significantly
- 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
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