I was doing some cable fishing in my attic today and I noticed that
two of the bathrooms on the second floor have their exhaut fans
terminating in the attic. Actually the end of the exhaust duct is
laying on the soffit vent. Is this proper under most building codes?
The attic has good ventilation with the soffit and ridge vents. But I
am still not happy with what the builder did.
I was thinking of using a wall cap and cutting a 5''x5'' hole in the
soffit and venting it this way as opposed to putting another PVC stack
thru the roof. Has anyone tried this before and is it any better than
what the builder did?
I bought two through-the-soffit vents for the remodel of my upstairs
bathrooms from the local borg (Home Depot or Lowe's, can't remember which).
These are relatively inexpensive plastic units with a screened opening and a
snap on hood. Quite easy to hook up from the outside of the house if there
is a bit of slack in the flexible duct -- just cut the opening in the
correct place, pull the duct through, clamp in over the snout, and screw the
vent in place. This is FAR easier than messing about in the attic,
especially if you have a lot of insulation up there.
Your builder should be hung as he obviously violated
building codes. No exhaust vent may terminate in the
attic. Anything you do is better than what he did, so you
could run it out the soffit, but the best solution is to run
the vent up through the roof.
Don't know what to say. The standard is to take it straight
to the roof, and most people don't have condensation
dripping out of the exhaust fan. Hot air should rise up the
pipe to hit the cover, condense, and the liquid would run to
the lowest edge where it would drip on the roof. I suppose
that one could get condensation within the pipe if the run
was long and the pipe was very cold, in which case,
insulating the pipe might solve the dripping problem.
Problems never cease.
Would be less back pressure if ran straight up thru roof, but that invites
other probs of making a leakproof penetration *after* roofing is applied. I
would therefore go with a standard soffit vent - with 1/8 or 1/4 inch
screen to keep out vermin - for that size of vent duct. Leaving the duct on
the soffit vent is pointless, and just pumps warm moist air directly into
the attic space. This is really a no no. Could be, this was not the
intention of the builder, and someone else was supposed to complete the job,
but never showed up, or job was unsupervised. You might compare notes with
homes built at the same time in your neighborhood.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.