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re: Roof turbine to reduce attic heat?
Posted on 5/2/24 at 11:42 am to VernonPLSUfan
Posted on 5/2/24 at 11:42 am to VernonPLSUfan
quote:
I have both, ridge and soffit and it's still hot during the summer. Was thinking exhaust fan on a thermostat to kick on and off at a certain temp, like 80 degrees, if that could happen during the summer.
I posted my thread above, so I won't rehash it all. My hip roof made for short ridge vents. It was always melting hot up there. I added the turbines and its a huge improvement. I left my ridge vents and tested for cross-flow. I could find no evidence of air getting short-cycled between the ridge and turbine vents.
That said, I shied away from anything powered. The thought process is too much "suction" will force cold air to get sucked out of your house if it can't feed enough air through the soffit vents.
I'm of the opinion, the more airflow I can get up there the better. I'm no engineer or expert in thermodynamics. But I imagine it like sitting in a hot car. Cracking windows and a 1" crack in the sunroof will help. Putting a box fan on the sunroof will make a huge difference.
I also followed up by blowing a dozen bags of fiberglass insulation on top of my existing insulation. My house maintains at 71 so far, with WAY less cycling than before.
This post was edited on 5/2/24 at 11:44 am
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