[Shop-talk] Garage ventilation?

[Bill Gingerich]

Doug,

Absolutely DO NOT vent into the attic!  Outside venting is the standard
recommendation for bath and kitchen fans, and I believe it is sound advice
for a garage vent fan.  Humidity, CO, dust, fumes should be blown outside,
not into anywhere connected to living space.  Through an outside wall would
be OK, IMHO.  I'd also vent the attic space, and insulate the ceiling of the
garage - keep most of that heat from getting to the garage in the first
place.  And help you heat it in colder weather too.  Win-win.

Bill Gingerich
OKC
Hoping to build my shop someday.



-----Original Message-----
From: shop-talk-bounces+bill=gingerich.us at autox.team.net
[mailto:shop-talk-bounces+bill=gingerich.us at autox.team.net] On Behalf Of
Doug Braun
Sent: Tuesday, July 17, 2007 12:16 AM
To: Shop-Talk List
Subject: [Shop-talk] Garage ventilation?

Hello,

I have a 24x24' garage with sheet-rocked walls and a
high 12-foot sheet-rocked ceiling.  The garage doors
are only 6'6" high, so the upper half of the garage
interior is a completely unventilated space.  Above
the ceiling is a fairly high attic space.  There is no
insulation at all.  The garage is attached to the
house, but the garage's attic is separate from the
house attic (the wall between them is insulated).

The garage gets stiflingly hot in the summer, and I
would love to install some sort of ventilation fan.

Would it be legal to install a exhaust fan in the
garage ceiling that ventilated into the attic?  Or
would this be against code and/or a carbon monoxide
hazard?  Or could I possibly put an exhaust fan near
the top of one side wall, to exhaust directly
outdoors? 

(I probably should also put insulation in the ceiling
and improve the mediocre ventilation in the attic
space.)

Thanks,
Doug