Attic ventilation
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From: Baltimore
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From: Calgary
Your attic definitely needs to be vented, a mistake that many people make when putting in insulation themselves. Venting on the roof will reduce temperatures dramatically in your attic, and that heat release will reduce temps in your house.
Don't know about the need for a powered vent though.
Don't know about the need for a powered vent though.
Joined: Nov 2004
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From: Denver
Usually, an attic vent is thermostatically controlled. When it gets to a certain temp, the fan will kick on. Working in my parents attic recently and it was hot as hell up there. Looked around and discovered that their fan was never wired up when the house was built 15 years ago! Hooked it up and their upstairs temps dropped by 4 degrees.
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From: Lakewood, OH
Depends. Is your attic finished (ie is there drywall or can you see the rafters)? If it is, chances are that there are vents in the roof soffits (the horizontal part that extends from the gutter back to the house) and a ridge vent at the peak of the roof. If this is the case, you should get plenty of circulatoin from just that. A powered fan like the one linked can make the attic more comfortable but the soffit & ridge vents will provide all the air circulation you need for the structure. If you can see the rafters, you may not have soffit and ridge vents. If this is the case, a powered ventilation fan will help give you circulation, assuming you can provide a fresh air draw (ie crack a outside window open). Easy quesiton, not so easy answers.
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