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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 14,707
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can bathroom exhaust fan exhaust into vent pipe ?
Our two bathrooms on the main floor do not have exhaust fans but they do each have a window, I guess that was OK back in 1986 when the house was built. Anyway today I waded through the fiberglass insulation and centered a fan in our master bath. Fished the wire through the wall life is good except where to vent to the outside ? I just had a new roof installed 4 weeks ago and I am NOT punching a hole through the roof. The way the soffit's are designed there is no way to install a soffit vent I just can't reach ( hard to explain ). But within about 6 ' of the new fan is a 4 " vent stack for the plumbing it is PVC. It would be very easy to drill a 3-4 " hole and install a saddle and I would be able to vent into that. In the future when I add a fan to the guest bath it also would be about a 6 ' run. Any problems doing this ?
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler . |
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03-30-2013, 01:53 PM
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The Unsettler
Join Date: Dec 2002
Location: Lantanna TX
Posts: 23,885
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IIRC, one of the functions of the vent is to allow sewer gasses to exit the system. So I'd say no.
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"I want my two dollars" "Goodbye and thanks for the fish" "Proud Member and Supporter of the YWL" "Brandon Won" |
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03-30-2013, 01:58 PM
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FUSHIGI
Join Date: Feb 2006
Location: somewhere between here and there
Posts: 10,753
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I wouldn't. I could see a negative pressure in your house (clothes dryer, stove fan...) potentially pulling stack gas in.
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03-30-2013, 02:31 PM
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Navin Johnson
Join Date: Mar 2002
Location: Wantagh, NY
Posts: 8,818
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Don't do it..... chance are you could get sewer gasses in your home...
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Don't feed the trolls. Don't quote the trolls  http://www.southshoreperformanceny.com '69 911 GT-5 '75 914 GT-3 and others |
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03-30-2013, 02:35 PM
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Registered
Join Date: May 2004
Location: Lake Cle Elum - Eastern WA.
Posts: 8,417
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Can you go thru the siding on a gable end?.....PCV piping is cheap...
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Bob S. 73.5 911T 1969 911T Coo' pay (one owner) 1960 Mercedes 190SL 1962 XKE Roadster (sold) - 13 motorcycles |
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03-30-2013, 03:01 PM
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Detached Member
Join Date: May 2003
Location: southern California
Posts: 26,964
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Uh, no. When vent fan is off, sewer gas will enter the house. Illegal as all get out I would suspect.
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Hugh |
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03-30-2013, 03:24 PM
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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 14,707
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OK so that is out, yes I could go out a gable but the run would be 30 ' plus. I'm getting up on a ladder tomorrow and see if I can use a soffit vent that is near by. What a pain in the butt !
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler . |
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03-30-2013, 03:28 PM
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Registered
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A new roof is the perfect place to vent. Shingles are still pliable and easily replaceable if you screw up.
Roofers should have left you a partial bundle. Go through the roof. |
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03-30-2013, 03:56 PM
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Parrothead member
Join Date: Jul 2003
Location: Monmouth county, NJ USA
Posts: 13,852
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Quote:
And if I'm correct it has to be at least 4 horizontal ft from the vent stack.
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Vinny Red '86 944, 05 Ford Super Duty Dually '02 Ram 3500 Diesel 4x4 Dually, '07Jeep Wrangler '62 Mercury Meteor '90 Harley 1200 XL "Live your Life in such a way that the Westboro Baptist Church will want to picket your funeral." |
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03-30-2013, 04:10 PM
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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,821
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It doesn't have to be that good of a connection to the soffit vent. You could fabricate something you can shove over to the soffit vent after connecting the hose. But do make sure the back draft function works.
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03-30-2013, 04:19 PM
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Detached Member
Join Date: May 2003
Location: southern California
Posts: 26,964
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IF you run 30' run as large a duct as you possibly can. The fan can only push so much, so far.
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Hugh |
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03-30-2013, 04:55 PM
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Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 14,707
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Quote:
 The soffit vents on this house are a little different because there are several jogs to match the roof line. But as I studied this I think I can fit from the outside a vent and slide the 4 " pipe/elbow/whatever that I will have to fab. The fan has a back draft valve and I may add one in line in addition to the soffit vent for bathroom fans that Home Depot sells that also has two slats that close when the fan is not running. For the climate here that should be sufficient. By the way the bumpers are holding up great
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler . |
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03-30-2013, 04:58 PM
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1987 Porsche 911 Targa 3.2 
