Pro's... Can be simple to do, depending on the layout of your house.
Con's. High levels of humidity in the garage will cause tools, automobiles,
appliances, garage door openers, light switches, light fixtures, and
everything else to rust or otherwise prematurely fail. In addition, the
high moisture level could cause mildew, dry rot, long-term structural
problems, drywall failures, and other nasty ramifications.
Conclusion. Don't do it unless you're trying to get even with someone who
has done you wrong in a big way.
You may tend to get moisture (or frost) and lint accumulation. Electric
sparks could be dangerous if you get fuel fumes from the likes of
lawnmower, etc. It may also be dangerous if anyone unknowingly replaced
it with a gas dryer.
Don't know of any pros unless you work on your car while drying clothes in
winter. But then the electic spark thing may still be an issue if you
spill or have open fuel in an enclosed space.
Thanks, always good to learn something new.
"Separation time" does seem like an appropriate term when referring top
how long it will take fire to penatrate a wall.
The only recollection I had of hearing the word "separation" used
relative to fire stuff was in reference to the minimum "separation
distances" between tanks of flammable substances and other objects or
Thanks to all of you for the great input. Clearly, venting the dryer into the garage
not a good idea, regardless of the legality or code-permittedness of it.
So, the followup question ... any suggestions for rectifying the problem that I've
The vent run currently goes up from the base of the wall, about 8 or 9 feet then
the attic space over the garage and on to the outside of the house, another 12 or so
total horizontal run. There's 2 90 degree bends in there, one where it turns
from the base of the wall, and another where it turns horizontal to go across the
Problems include somewhat excessive lint buildup in the vent, at least compared to the
buildup in shorter runs that I've lived with; excessive drying time and (I'm sure)
commensurate shortened life expectancy of the dryer; and difficulty cleaning such a
run on a regular basis. Can't eliminate the horizontal and take the vertical run
up through the roof because it'd be going right through my bedroom.
I'd really like to shorten this run. It just seems excessive. Is it?
Thanks, again ... Phil
Wish it was. Unfortunately it's a choice of 1)up and over the garage (as is now) 2)
the garage (ruled that out after responses here) or up and across 3 other rooms (even
further horizontal run than going through the garage).
Poorly designed tract style home.
Someone else suggested a supplemental fan in the ductwork ... I'll have to look into
never knew such a thing existed.
How far above grade is the interior floor level where the dryer is? Is it
above finished space, or open joists? Although not ideal, you CAN go DOWN
through the floor, and then sideways to nearest wall, if that is a shorter
run than you have now. A tenant added that to a rental house my family used
to own, and it seems to work fine. No idea if code allows it, and going down
with a 'chimney' just seemed counterintuitive to me, but it was the only
practical route in this case.
Assuming you don't have a shorter path to the ouside, I would suggest a
booster fan designed to work with dryers. I would consider that a a
distant second to having a short direct path, but better than the
Not allowed by code. The 1-hour seperation referred to by a previous
poster is not correct unless you are discussing a multi-family
structure.. Code requires at least 1/2" gypsum board on the garage
side and a door of 20 minute fire rating or equivelant. A 1-hour
seperation would be somewhat more stringent.
Right you are.
International Residential Code goes on to say:
ducts penetrating the walls or ceiling separating the garage from the
dwelling shall be 26 gage sheet steel or "other approved material" and
shall have no openings into the garage.
That leaves the possibility of ducting * through * the garage to the
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