Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-09-2008, 02:59 PM   #1
Member
 
Join Date: Jul 2007
Posts: 308
Share |
Default

Extra high vent pipes?


Hi;
I was walking past a large, new home in town and couldn't help but notice the two pipes sticking up from the roof.
Each pipe was an extension of the normal vent pipe, and was about 10 feet high.
Each had a standard rain cover fitted to the top.

I am curious as to why the vent pipes need to be extended.
The only thing I can think of is that this house has a bathroom or other plumbing on the uppermost floor and the vent pipes need to extend a minimum height above these fixtures.

Any other ideas?
It looks really odd.

FW

fw2007 is offline   Reply With Quote
Old 07-09-2008, 04:06 PM   #2
Registered User
 
Termite's Avatar
 
Join Date: Apr 2008
Posts: 6,520
Default

Extra high vent pipes?


Is it a flat roof, perhaps a party deck of some sort? If so, the vents must rise 7' above the walking surface.

Otherwise you're just trying to clear the design snowfall accumulation in the area.

Termite is offline   Reply With Quote
Old 07-09-2008, 05:49 PM   #3
Member
 
Join Date: Jul 2007
Posts: 308
Default

Extra high vent pipes?


It's not a flat roof. As far as snowfall, here in NJ, we rarely get more than 1 foot in a storm.

I would be kind of leary of having anything like that sticking up from my roof. For one thing, these things might act as lightning rods, and when lightning did hit it could electrify the entire drain system.
Another issue might be high winds.

FW
fw2007 is offline   Reply With Quote
Old 07-10-2008, 08:44 AM   #4
Licensed Master Plumber
 
mstplumber's Avatar
 
Join Date: May 2008
Location: Atlanta, GA USA
Posts: 211
Default

Extra high vent pipes?


The only other reason for extended vents would be if they were too close to an adjacent window or door. Most plumbers, however, would just relocate the vent instead of sticking them up that high.
__________________
Mstplumber

Check out my goofy video for my new toilet repair book.
mstplumber is offline   Reply With Quote
Old 07-10-2008, 11:08 AM   #5
Member
 
Join Date: Jul 2007
Posts: 1,566
Default

Extra high vent pipes?


If they have a rain cover then they aren't vents for the DWV system. Most likely vents for high efficiency condensing gas devices such as furnace or water heater. No idea why they'd be so tall. Maybe they are gas fireplace vents and the local inspector is considering them to be chimneys and have to meet chimney height requirements. Stranger things have happened.
jogr is offline   Reply With Quote
Old 07-10-2008, 12:36 PM   #6
Member
 
Join Date: Sep 2006
Posts: 1,670
Default

Extra high vent pipes?


I agree with jogr, that they are not plumbing vent pipes. My Sister had a new furnace installed and it had "mufflers" installed in the exhaust piping and it was still loud. The height could have been to lessen the noise inside the house and for the neighbors comfort.
__________________
If you have never made a mistake, you haven't done much.
majakdragon is offline   Reply With Quote
Old 07-11-2008, 08:07 AM   #7
Member
 
Join Date: Jul 2007
Posts: 308
Default

Extra high vent pipes?


They sure looked like they were extensions of the vent pipes coming out of the roof.
I'll try to get some photos.

FW

fw2007 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
finishing a basement bath - tie in to ejector pump vent? ajbowman Plumbing 7 04-15-2008 12:09 AM
Where is the toilet vent?!?!? domgbrown Plumbing 4 01-11-2008 06:33 PM
Yoke vent for water closet kenlog Plumbing 4 07-13-2007 06:34 PM
Bathroom Vent Not Vented to Outside / Would need to vent through flat roof House_Amuck HVAC 5 03-30-2007 09:57 AM
Vent Pipe Leak romeguy1 Plumbing 9 12-11-2005 12:08 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.