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- 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
- 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
- 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
- Saving Sustainably: Air Sealing and Insulation
The lower 16 inches of the attic also had to be sealed since this is the part of the attic that will contain the insulation The loose-fill cellulose insulation that I will be using in the attic performs by trapping air, so it will perform much more efficiently if I limit air movement through it as much as possible
- Houses Need to Breathe Right? - Green Building Advisor
A sup-ply system uses it to distribute fresh outside air through the existing ductwork But you still need exhaust fans in the wet rooms The best approach is a quiet, continuously running multiport vent fan in the attic that draws from several rooms (see p 68) Exhaust fan
- 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
- The Impact of Wind Washing on Insulation R-Value
Advice for ensuring your attic insulation stays in place and maintains its optimal R-value; directing airflow is essential
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