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Old 08-08-2012, 07:38 PM   #1
MRK
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Roof vent installed over rafter


I had a roofing contractor install 4 new vents due to concerns that existing ridge vent was not providing adequate ventilation in our finished attic space. The attic was finished an insulated by the previous owners. One of the new vents was installed directly over a rafter. Another vent was installed exposing the insulation that was stuffed between rafters. What should I do?


Last edited by MRK; 08-08-2012 at 07:41 PM.
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Old 08-08-2012, 08:09 PM   #2
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Roof vent installed over rafter


Is this a finished attic?
Not sure how or why there would be insulation there unless there's a cathedral ceiling under that area.

It's not going to do any harm if the vent is over a rafter, just not sure why when they removed the shingles they did not see the nails and cut out between the rafters.
Sure would like to see some pictures of the roof to see how they installed them.

Makes me wonder how you came up with the ridge vent was not venting enough air. With the proper cut out at the ridge and the proper amount of soffit vents and baffles they should have worked fine.

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Old 08-08-2012, 10:34 PM   #3
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Roof vent installed over rafter


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Originally Posted by MRK View Post
What should I do?
Don't spend anything more until you understand what you have now.

What type of ceiling to do have? (Is it cathedral all the way to the ridge, or do you have a small "attic" area still) Why type of insulation and how thick is it? Are the rafter bays deep enough for the insulation stuffed in there? If you have and attic area behind knee walls that are accessible, look to see if you have open intake ventilation at the soffits. Are there baffles the keep the insulation from touching the deck above the drywall ceilings?

If this room is causing problems there are likely better ways to spend the money.
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