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Roof turbine to reduce attic heat?
Posted on 5/1/24 at 5:46 pm
Posted on 5/1/24 at 5:46 pm
Just went up to the attic and it's hell's front porch up there . No turbines or any sort of ventilation. 2 story townhouse, built in 2007. Advice appreciated!
Posted on 5/1/24 at 5:49 pm to Daktari
No roof venting, ridge vents?
Posted on 5/1/24 at 7:50 pm to Daktari
quote:
No turbines or any sort of ventilation
This cannot be correct.
Posted on 5/1/24 at 8:27 pm to Daktari
If it was built in 2007, you probably have ridge vents.
Posted on 5/1/24 at 9:44 pm to Daktari
Posted on 5/2/24 at 8:35 am to Daktari
Just added two last week. Already tell the difference.
Posted on 5/2/24 at 9:28 am to Daktari
I would say you probably at least have gable vents or ridge vents but I've definitely seen houses without anything. If you don't have either of those two, you definitely need to add ventilation.
Posted on 5/2/24 at 11:25 am to iwyLSUiwy
When we built in '08, I researched this and some think tank in ATL said definitely ridge and soffit vents, but NO to power fans. Use turbine if you want.
Posted on 5/2/24 at 11:34 am to Daktari
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.
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
Posted on 5/4/24 at 11:41 pm to LSUDad
Ok so maybe I don't know what I'm looking for. How would I identify a ridge vent?
Posted on 5/5/24 at 1:44 pm to Daktari
The Choppa posted a picture of a Ridge Vent. They have a cut back of a few inches on the ridge, it allows an updraft. Removing heat from the attic, look on the outside, at the roofs peak, you will notice the difference between a ridge vent and ridge capped shingles.
Posted on 5/5/24 at 6:11 pm to Daktari
I put in 2 a few years ago when my AC was struggling to keep up.
Made a massive difference in keeping my house cool.
Made a massive difference in keeping my house cool.
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