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HomeRepairNoob 04-13-2006 10:08 PM

Bathroom exhaust problems
 
I am having problems with steam build-up in my bathroom. I noticed a couple of days ago that there were orange streaks of water on my freshley painted walls. I checked the installed 50 cfm exhaust fan and it was hardely sucking any air out so I relaced it with a 70 cfm fan and it does work ia little better but once I put the vent cover back on it is like the fan is not even on. Any advice as to what I should do?

coolmen 04-14-2006 05:08 PM

How big is the bathroom?Is this a new house? 2nd floor bathroom? is this something that just started happening or never worked? do you see where it exhaust to the out side.?

Did you check to see if the louver is opening properly.I find that some cheaper type louvers may not open all the way if not put in right. with the fan cover off can you see that it is connected to the side of the fan with metal pipe or flex?
if you can see this from the attic check to see that nothing is blocked/crushed. what size pipe? should be 4" or possibly 3"

HomeRepairNoob 04-16-2006 02:25 PM

Quote:

Originally Posted by coolmen
How big is the bathroom?Is this a new house? 2nd floor bathroom? is this something that just started happening or never worked? do you see where it exhaust to the out side.?

Did you check to see if the louver is opening properly.I find that some cheaper type louvers may not open all the way if not put in right. with the fan cover off can you see that it is connected to the side of the fan with metal pipe or flex?
if you can see this from the attic check to see that nothing is blocked/crushed. what size pipe? should be 4" or possibly 3"

The bathroom is 54 sq feet. First floor bathroom in an old home. I have always had this problem. I looked on the roof from the ground and I can see a PVC pipe coming straight out of the roof top. I'm assuming that this is it. the exhaust port on the fan is connected to a pipe via what looks to me like neoprene. Hope this helps.

coolmen 04-16-2006 11:02 PM

A first floor bathroom i would think would run the shortest distance to the outside of the house.to the exterior/outside wall, and then use a louver cover.what your looking at on the roof would probally be a plumbers stack pipe for your plumbing and have nothing to do with bath fan vent.in the past I had the siding people cover over my pipe when they installed the new siding on the house.is this your problem maybe?did they not bother to cut in a billypen/louver vent to the outside is your bathroom on a exterior wall with window? pictures would help (lokk on the side of the house for a vent close to the bathrm. what your looking for may look like your dryer vent louver.

Mike Swearingen 04-17-2006 07:42 AM

There is a plastic louver inside most bathroom exhaust fan housings at the discharge pipe that may be stuck closed or partially closed. Dust can build-up around them. Check that, too.
Also, some people improperly vent exhaust fans into the attic or basement. Check those areas for a clogged or blocked exhaust vent.
If you can smell sewer gas coming from any roof d/w/v stack pipe, that should be strictly for plumbing venting. Exhaust pipes are not supposed to be connected to them.
Good Luck!
Mike

HomeRepairNoob 04-17-2006 07:19 PM

1 Attachment(s)
[quote=coolmen]A first floor bathroom i would think would run the shortest distance to the outside of the house.to the exterior/outside wall, and then use a louver cover.what your looking at on the roof would probally be a plumbers stack pipe for your plumbing and have nothing to do with bath fan vent.in the past I had the siding people cover over my pipe when they installed the new siding on the house.is this your problem maybe?did they not bother to cut in a billypen/louver vent to the outside is your bathroom on a exterior wall with window? pictures would help (lokk on the side of the house for a vent close to the bathrm. what your looking for may look like your dryer vent louver.[/quote

There is someting directly below the stack pipe that resembles my dryer louver(see photo). The only other louver on that side of the house is up by the top of the roof.

coolmen 04-17-2006 10:07 PM

is the bathroom directly below the pipe area? directly below pipe is dryer?to the left of the pipe looks to be either a attic fan or some type of venting cap. all tho it looks pretty big,it could be for your bathroom venting.not sure. maybe some input from some others may help. (it may be possible that bath fan was ran in the soffit area and not vented to the outside.this is done at times even in todays new construction but not correct.) I guess being that the bathroom is on the first floor you cant access the ceiling above correct?

HomeRepairNoob 04-17-2006 10:10 PM

Quote:

Originally Posted by coolmen
is the bathroom directly below the pipe area? to the left of the pipe looks to be either a attic fan or some type of venting cap. all tho it looks pretty big,it could be for your bathroom venting.not sure. maybe some input from some others may help.

No, the bathroom is to the right of the pipe area.

Aceinstaller 04-18-2006 01:54 AM

well.

the only option is to get into the attic space to look at the ceiling where the vent fan is located, and trace the pipe(if any) to see where it terminates.

if you cant fit into the attic, try removing the roof vent and looking throug the hole.

otherwise remove the bath fan, cut in a vent termination cap in the exterior wall in the same joist bay as where the fan is located. and fish a flex line from the new cap to the fan, and reinstall.

coolmen 04-18-2006 10:33 AM

goodluck


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