How to Cool a Hot Attic | Hot Attic Solutions | Hot Home Repairs
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- Опубліковано 19 чер 2017
- Learn how to cool your hot attic. We recently got a call from a local homeowner saying that the attic, in which their kids liked to sleep in occasionally, was becoming unbearably hot. Their attic had no insulation on the cathedral-style ceiling walls, and therefore it pretty much just collected thermal energy all day until it became downright uncomfortable to be in.
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Check out our latest video on radiant barrier and how it can help keep your attic cooler!
Put the paper OVER the stud. Unless you are gluing drywall, the staple won't stop a drywall screw. The vapor barrier needs to be as complete as possible - side stapling defeats that.
To make your house energy efficient and comfortable you need to make your house like a thermos. A thermos can keep a drink hot or cold for 24 hours. Why? Because is 100% air tight all the way around and insulated all the way around. Fiberglass is NOT an air tight insulation. Hot air from the roof decking can easily move through the sides of the fiberglass and paper. The most effective way to make an attic energy efficient is to spray 7 inches of open cell spray foam to the bottom of the roof decking and seal off the soffit vents and roof vents. This will make the attic space 100% air tight and insulated. This strategy is known to cut electric bills in half. Using spray foam under the roof decking and eliminating attic ventilation will not shorten roof shingle life as well. I have a letter from GAF shingle manufacturer that spray foam insulation will not void their warranty. Research open cell spray foam. I will be doing it on my own house.
This is not the right solution. You would be better off augmenting the attic floor insulation and taking that to R49. Before doing that that attic should be air sealed, and baffles installed along the soffits to extend 3” above the insulation. If necessary put a radiant barrier on the west facing attic walls. Solar fans are.... ok but may not be necessary if the attic floors is air sealed and insulated properly.
OK I finally installed thermometers in my attic and outside and garage. The attic goes about 20F degrees above outside temperature but cools off pretty quick at night and last night it went down to the 60’s and so did my attic. We live in Southern California and it gets hot here and triple digits. Do you think it I should put an attic fan in just for the daytime when it gets really hot outside and in the attic
This is a diy job. You can easily save thousands by buying your materials and doing it yourself on a Sunday morning.
If you do not plan to ever put up drywall, what about using foil covered foam board to insulate with (would act as its own baffle too)?
Why not just staple a radiant barrier material?
Resist the urge to use the attic as a closet keep it empty and clear, for better air flow and circulation. Rugs are bad heat absorbers and humidifiers, cold hard floors carry the day in hot summer days! If you have one of those bad week long heatwaves use a quick put up and take down shade or tent awning and shade any windows that take in full sun between 11AM-sundown.
That 90 seconds of lost was certainly educational.
Don't those fans cause a negative pressure in the attic and make conditioned air leak up into that space? Dr. Energy Saver has a product that just tightly seals the attic up with foam board that has a radiant barrier and the attic space is then near the same temp as the conditioned space.
Thank you for the idea on the Solar Fan! <3
"all that thermal heat"
Thats pretty cool...👍
I like the vlog type video
Great video but I am wondering how and if it would be wise to incorporate the foil to help with radiant heat.
What do you do about vents in the Roof. Because they love most of the hot air NI live in Phoenix Arizona by the way.
Looks nice.
That's great space, I would drywall that room and use it
My house was built in 1867 (yes 18). No soffit vents, no roof ridge vent, just an exhaust fan in the wall. A typical new england metal roof has been installed some time in the past. I have a walk in attic over a cold kitchen. I want to stop the heat loss from the kitchen up into the attic. I am planning on insulating the "walls". They slope from ceiling peak to the floor. Would I need baffles? This room is fully floored and has some insulation under the floor boards. Thanks for all your videos. They are very helpful. PS. an insulation company wanted to just blow in insulation which would mean I couldn't use the space as a room again. I didn't like that option.