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#1
Posted to alt.building.construction,alt.home.repair
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Venting bath exhaust fan
Due to very low roof pitch I can only vent upstairs bath exhaust fan
through the roof. Can someone give me advise and point to online resources what type of roof vent is best and most of all how to put it to prevent roof leaking. Are their any code requirements of how far from roof edge/VW vent must roof exaust vent be? |
#2
Posted to alt.building.construction,alt.home.repair
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Venting bath exhaust fan
In some areas, it is permissable to vent through the soffit under the
roof. - don't know if you soffit is available since it has such a low pitch. How about through a wall on a higher portion of the roof? Each time you penetrate a roof, it is another opportunity for a leak - particularly with low pitch roofs. |
#3
Posted to alt.building.construction,alt.home.repair
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Venting bath exhaust fan
I explained in my original posting that due to low pitch roof I cannot
vent through soffit. The only other option I see for venting bath exhaust fan is through the roof. I just don't know what type of vent to use. |
#4
Posted to alt.building.construction,alt.home.repair
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Venting bath exhaust fan
"Sasha" wrote in message oups.com... I explained in my original posting that due to low pitch roof I cannot vent through soffit. The only other option I see for venting bath exhaust fan is through the roof. I just don't know what type of vent to use. What does your installer recommend? Sounds like you need someone who has a clue. |
#5
Posted to alt.building.construction,alt.home.repair
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Venting bath exhaust fan
What installer are you asking? I installed exaust fan myself. It is
Panasonic WhisperFit 70 cfm. Now I need to vent it properly through the roof. |
#6
Posted to alt.building.construction,alt.home.repair
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Venting bath exhaust fan
Sasha wrote: I explained in my original posting that due to low pitch roof I cannot vent through soffit. The only other option I see for venting bath exhaust fan is through the roof. I just don't know what type of vent to use. Do you have a microwave duct that you can tie into? Or even a sewage vent pipe? |
#7
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Venting bath exhaust fan
On 2 Dec 2005 12:49:14 -0800, "Nexus7" wrote:
Sasha wrote: I explained in my original posting that due to low pitch roof I cannot vent through soffit. The only other option I see for venting bath exhaust fan is through the roof. I just don't know what type of vent to use. Do you have a microwave duct that you can tie into? Or even a sewage vent pipe? Now that would be a really goofy idea! Dan |
#8
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Venting bath exhaust fan
"Dan" wrote in message ... On 2 Dec 2005 12:49:14 -0800, "Nexus7" wrote: Sasha wrote: I explained in my original posting that due to low pitch roof I cannot vent through soffit. The only other option I see for venting bath exhaust fan is through the roof. I just don't know what type of vent to use. Do you have a microwave duct that you can tie into? Or even a sewage vent pipe? Now that would be a really goofy idea! And breaks most codes in civilized nations. Dan |
#9
Posted to alt.building.construction,alt.home.repair
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Venting bath exhaust fan
Your local home improvent store will have roof vents that you can use.
No real special ones to use. The better ones are most likely stainless or aluminum and will last a long time. Others may be galvanized steel. In any case make sure to use some good insulated flex duct when doing this job. This may prevent condensation from building up in the colder months of the year. Cutting open the roof isnt really fun (hate doing it myself) Just make sure that you seal it all up nicely. Next rain storm, take a look at your work and see if its dry. Hope you ran the panasonic on a GFCI circuit too. Its code for most bathroom installations (at least over the shower ones, but anywhere in the bathroom really makes more sense (water + electric = ouch)) I would also recommend a timed switch for the unit. (I used them in my home) Its nice just to press a button for 10 or 20 or 30 min. and forget about shutting off the fan. |
#10
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Venting bath exhaust fan
Yes, it run it on GFCI and I installed timer 5-10-15-30 min switch from
smarthome.com |
#11
Posted to alt.building.construction,alt.home.repair
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Venting bath exhaust fan
Due to very low roof pitch I can only vent upstairs bath exhaust fan
through the roof. Can someone give me advise and point to online resources what type of roof vent is best and most of all how to put it to prevent roof leaking. Are their any code requirements of how far from roof edge/VW vent must roof exaust vent be? I bought mine from Menards. Just an alum hood with damper (they'll show you what to buy and how to install. Lowe's is good too.) Drilled a 1/4" hole from the attic side as to where I wanted the vent hood, pushed a pencil through it so I could find it easier. Took a wrecking bar and pulled up several shingles, cut the hole and laid it in the hole loose. Replaced the shingles while cutting the profile (I used roofing cement but probably would not have had to). Secured the hood when refastening the shingles. Spray-painted the hood brown to match the roof. (I painted all the vent hoods brown to match the roof and stink pipes black just because.) Plumbing vents (PVC) have remained painted more than 20 years so far. Used alum rigid ducting from the fan to the hood's collar (could have used alum flex. - do NOT use cheap stuff like plastic.) Straight runs, straight out, no dips or traps. Did not insulate, never had a single problem with condensation. Winter design temp is +3 deg around here, so I imagine I would have seen something in the last few years by now. Took about 2-1/2 hours. Dennis |
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