Roof Vent Question - Roofing/Siding - DIY Home Improvement | DIYChatroom

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Roofing/Siding


Thread Tools Display Modes
Old 04-10-2011, 09:59 AM   #1
Join Date: Jan 2011
Posts: 3
Rewards Points: 10

Roof Vent Question

My townhome was built in 1994 and strangely my 3 bathroom exhaust fans AND the dryer all terminate to a vent plate on my roof with a cover with an integrated "flapper".

All fans and the dryer have their own 4" insulated flex line terminating at this roof plate which has 4, 4" terminations on it.

All the fans and the dryer line have back-flow devices installed.

The question i have is since i'm having my roof re-done, should i terminate each line to a separate roof vent and have 4 instead of 1?

I was thinking of terminating at least the dryer to its own vent and the bathrooms to another.

My guess is that this doesn't pass code anymore.

Any recommendations or thoughts would be appreciated.



jrref is offline   Reply With Quote
Old 04-10-2011, 10:38 AM   #2
Shut in w/o Home
seeyou's Avatar
Join Date: Dec 2008
Location: Lexington, KY
Posts: 697
Rewards Points: 502

How long are the runs and is there a booster fan?

The only times I've seen more than one appliance on a single outlet is when a remote fan is used for the bathroom vents or the runs for all the units are long and there is a booster fan helping all appliances. I've seen a dryer tied in to this circumstance.

Otherwise, the dryer should probably be moved to it's own roof jack. It probably won't hurt to have more than one fart fan on a jack.


seeyou is offline   Reply With Quote
Old 04-10-2011, 12:09 PM   #3
Join Date: Jan 2011
Posts: 3
Rewards Points: 10

There are no booster fans and the longest run is about 20 feet.

Everything seems to work ok just want an opinion if i should separate things out since i'm changing the roof.
jrref is offline   Reply With Quote
Old 04-10-2011, 05:20 PM   #4
Join Date: May 2008
Location: Near Philly
Posts: 2,431
Rewards Points: 1,780

I would not think a dryer vent should mix with other vents. Don't ask me why, I just doubt it.
Also, think about updating the dryer vent line to solid metal, not corrugated plastic or foil, for fire protection purposes while you are at it.
bob22 is online now   Reply With Quote
The Following User Says Thank You to bob22 For This Useful Post:
seeyou (04-10-2011)

Thread Tools
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
Can I use one roof vent for 2 bathroom exhausts fans? P550 General DIY Discussions 19 05-18-2014 09:41 PM
new roof, ridge vent was in est, but not installed... Zel1 Roofing/Siding 29 09-01-2010 04:30 PM
Another roof ventilation question Jim F Roofing/Siding 9 05-13-2010 07:51 PM
Shingling over ridge vent -details needed jogr Roofing/Siding 4 11-06-2009 05:47 PM
Different attic vent. and insul. question Gus Roofing/Siding 3 12-28-2008 12:56 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1