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Posted by Chris Hill on May 28, 2008, 12:03 pm
wrote:
>Aaron Fude wrote:
>> Hi,
>>
>> I am installing a exhaust fan in a bathroom and the only way out for
>> the vent is through the roof. Can you point me to a resource that
>> describes how to do that? I assume it's more complicated than putting
>> some caulk around the edge... My roof is asphalt shingles.
>>
>
>Really?
>
>When I had my roof re-done a few years ago the roofers took out the dryer
>vent (which went straight up from the center of the house), decked over the
>spot and put down shingles. I didn't realize the dryer was venting into the
>attic until some time later.
>
>Anyway, I was faced with the same conundrum as you and was reluctant to put
>another hole in the roof.
>
>I opted for about 30' of 6" PVC to run the vent to the closest soffit.
>
>Here's a trick: Go UP into the attic about two or three feet, then a
>continuous slope downward to the soffit. That way, most of the fumes that
>condense will drain downhill.
If, that is, you can even get their. I must have one of the few
houses in the world that doesn't have four inches of clearance between
the top of the wall and the roof deck. The hole in the roof isn't a
big deal; this is roofing, not rocket science.
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