Bruce, August, et al,
This is but one more example of confusing terminology. A plumbing vent
is not an exhaust vent!
A plumbing vent (what August calls a cold vent) is provided to allow the
sanitary drain traps (and perhaps more) to operate properly. Without the
properly functioning traps
DPW Easy Feet are cost effective and work well, but plan well cut the stickem
layer gives you only one chance. Turn an L foot upside down, fasten it to the
easy foot and use a mini on the L.
United Electric Supply in Delaware stocks and ships fast.
Bill Hennessy
Berks Solar, LLC
I am unable to find anything in the Florida code that precludes covering a
plumbing vent. The code does require the vent to be 6 above the roof
surface I believe.
I was unable to determine if these vents need to be vertical with no bends
in the attic. Obviously you wouldn't want to create a trap
Flipping through the '04 plumbing code I see a few slopes called out
(1/4 per 1' for fixture vents, 1 per 1' for circuit vents, 1/2 per 1'
for combination drain/vent...). Fixture vents have a maximum distance of
a few feet from fixture trap to vent, but I don't think this prevents
you from
This is very helpful. The combustion vents are of the inverted cone
variety that you've described. I'm still wondering if the building or
mechanical codes would prohibit panels located 4 ft above plumbing,
bathroom or non-combustion exhaust vents.
Regarding Benn's earlier question about
I have installed modules over plumbing vents many times. Some
inspectors don't seem to care, some DON'T like it. One inspector
claimed that a plumber might need to get onto the roof to snake the
drain lines through the plumbing vents on the roof. If there is
adequate air flow into and out of the
Should you decide to lower your plumbing vents I have found an inside pipe
cutter to be an inexpensive and handy tool. Cut the vent and lead off an
inch above your desired pipe height and use the inside cutter to cut the
pvc pipe. Go slow and be careful to keep air space between the pvc and lead
I agree with Kurt: you need a licensed plumber in your area to advise
you, if you're trying to keep the AHJs happy .
2nd, I'm very sure you don't want an exhaust/ combustion type vent
under the array. I've had several over the years, and seen some arrays
installed over them. They can get
Bruce,
We routinely cut off DWV as suggested by earlier posts so that they are at
least 1 inch below the surface of the back of the module.
To be clear these are sewage intake air vents and not exhaust vents for heating
appliances.
We do place a quarter inch wire cloth over the cut off vent
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