: Pop (& Nick)
: International Mechanical Code:
: Section 913.2 Exhaust Required. Clothes dryers shall be
: accordance with Section 504.
: Section 504.4 Exhaust installation. Dryer exhaust ducts for
: dryers shall terminate on the outside of the building and shall
: equiped with a backdraft damper...... Clothes dryer exhaust
: not be connected to a vent connector, vent or chimney.
: See also sections 504.5, 504.6, 504.61, 504.62, 504.7.
Hmm, that was interesting to see and I was ready to apologize,
but something looked awfully familiar there. On top of that,
being "international" I couldn't find anything in my quick
research that would show it to be applicable to anything but
commercial construction regs and nothing "national" that seemed
to call for it other than a couple of city codes and their
construction codes. So, I'm doubting that anything makes it
applicable as a coded national requirement like NEC or NFPA etc..
Remember, the context here is the homeowner and what he
can/can't do per applicable codes. This is exactly why I often
tell people to check with their local code enforcement offices
because there can be a lot of surprises.
A quick search showed that what I was right, there was something
familiar about it. It's the same place that said, among other
"a) Attic furnaces and crawlspace furnaces are not permitted. "
but, what's missing there is the fact that they ARE permitted,
just under a different section and with caveats. But, this isn't
the point here; the next one is:
"d) All dryer vents shall be metal or metal flex. Non-metallic
vents for dryers are not permitted. See Section 504.6 and
Amendment to 504.6 "
Soo, the flexible, nylon-wire-ribbed parts sold in stores with
UL and CSA ratings, even ETL probably, and EC, aren't allowable?
I respectfully submit that they ARE permitted, just NOT for the
commercial construction company doing the original install.
Local codes will determine whether they are acceptable or not.
"All ductwork shall be a closed system and in compliance with the
International Mechanical Code Section 603. Use of a stud space or
joist space for a supply or plenum return is not permitted.
Gypsum ducts are not permitted. Delete Sections 603.5 and
Well, I can show you several inspected and approved places where
that's done, one of them being my own home when we lived in Chgo,
another being my nephew's home, built three years ago, right here
in NYS. It's simply not a requirement, OR has exceptions in
other areas of the code, just as the sections you quoted from
This one just plain caught my eye and is another example of how
that international code you quoted from isn't a requirement. It
"Fuel Fired Appliances
See Section 303 for approved and prohibited locations.
a) Section 303.3 Prohibited locations
Fuel-fired appliances shall not be located in, or obtain
combustion air from, any of the following rooms or spaces.
1. Sleeping rooms
3. Toilet rooms
4. Storage closets
5. Surgical rooms "
That's blatantly untrue and there HAS to be a section of
exceptions or dependencies somewhere even for an international
code. Fuel fired appliances are used in hotel rooms (sleeping
rooms) and in my own home, which has now been inspected twice,
once before we moved in and three years ago for acquiring a
boarding licence to be a foster child home, and the ONLY thing
either inspection ever found was too many things plugged into a
power strip because its location appeared close to "permanent".
It appeared as an "exception" and not a "violation".
Oops! Sorry, I lied; they did find a violation - my garage
wood stove (a huge one) wasn't considered grandfathered anymore
and I had to pull it out. The previous owner here was a fireman
and I guess he knew his way around the codes; he built, installed
and inspected it <g>. I didn't get that courtesy. Oh, they also
considered it an "incinerator", not a wood stove, which made the
"rules" a little different. The inspector wouldn't budge on that
one. All I had to do tough was take the stovepipe off it and
cover the chimney hole - then he passed me. Took about 15
Anyway, I guess I should have said "applicable" code to the OPs
situation, but I thought that was understood. Guess not.
Not really trying to be a PIA by the way - I just don't care for