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Hi Max and Bill,<br><br>
Thanks for your input. The actual plumbing vent will be rerouted to go
out of the north pitch of the roof. There will only be a an open
pipe left in the attic. The main issue is finding ways of keeping water
out of the vent pipe (now abandoned) and getting it short enough to fit
under the array. I think a cap on the pipe would make it too high, so I'm
looking for other ways to seal it. <br><br>
Drake <br><br>
At 11:19 AM 10/3/2013, you wrote:<br>
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So this is a plumbing vent instead of a furnace or hot water exhaust
vent? I’ve used Fernco rubber caps on unused vents, with the screw down
pipe clamps around the bottom. Also these are just to allow air into the
vent so draining water doesn’t create a vacuum so I suspect there is
little to be concerned about with cutting them off just above the roof
flashing and allowing enough room over the top to allow air to flow into
it. On a three inch vent that is only ¾” to equal the surface area of the
pipe. The top of the flashing is protected by the module over its top.
Over time would there be sewer gases which might cause trouble on the
back sheet of the module? I don’t know.<br>
<br>
Bill Dorsett<br>
Manhattan, KS<br>
<br>
<b>From:</b> re-wrenches-bounces@lists.re-wrenches.org
[<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" eudora="autourl">
mailto:re-wrenches-bounces@lists.re-wrenches.org</a>] <b>On Behalf Of
</b>Drake<br>
<b>Sent:</b> Thursday, October 03, 2013 8:03 AM<br>
<b>To:</b> RE-wrenches<br>
<b>Subject:</b> [RE-wrenches] Sealing roof vent<br>
<br>
Hello Wrenches,<br><br>
We are moving a roof vent. My plumber suggested that we cut the old one
and cap it instead of having to repair the roof. I'm not sure a capped
vent would be short enough to fit under the array. <br><br>
What if we were to cut the vent off at the flashing level and plug the
pipe. A rubber plug could be put in and topped with hydraulic water-stop
cement. Neoprene roof sealant could be spread on top of that.<br><br>
Has anyone tried anything like that? Are there any other good options?
Can you see any issues with this method?<br><br>
Thanks,<br><br>
Drake <br><br>
Drake Chamberlin<br>
<i>Athens Electric LLC<br>
OH License 44810<br>
CO License 3773<br>
NABCEP Certified Solar PV <br>
740-448-7328<br>
</i><a href="http://athens-electric.com/">http://athens-electric.com/</a>
<br>
<br>
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