benick wrote:

wrote in message
...
On Sun, 13 Sep 2009 01:08:51 -0700 (PDT), fftt
wrote:

On Sep 12, 9:14 pm, "John Gilmer" wrote:
The code allows drywall in garages....in a yuppie garage, maybe ok but

in a working garage drywall alone sucks.

What's the alternative? Drywall material does a very good job of
keeping
fire from spreading for a time.

Thing is that the wiring is inspected BEFORE the drywall is installed.
Often, new homes are sold with with all the drywall being installed
or, in
the case of party finished basement, drywall only on one side of a
wall.
Yet the house will have the necessary "occupancy permit."

The wiring inspector (if he actually visits) will assume that after he
leaves the exposed wiring will be covered. But it often isn't.

This is a case where there really isn't much risk. Nominally "exposed"
romex in a basement is less likely to be damaged that romex hidden
behind
drywall. You aren't going to accidentally put a screw through exposed
romex. The main risk, if any, is that someone might literally hand
something from the wiring or put some heavy tools where they might
abrade
it.

But some perfectely legal surface wiring stuff is much more likely
to be
damaged or permit human contact with a live wiring than is modern
"romex"
(NM) which, if you think about it, is "double insulated!"

What's the alternative?

drywall over OSB or plywood

drywall is pretty weak material, esp for a garage

OSB is pretty cheap but has decent strength

cheers
Bob


Georgia Pacific DensArmour Plus walboard. Twice as dense asdrywall,
with fiberglass surface. About the same price (or less) as cheap
drywall and OSB. It's about 86 lbs per 4X8 sheet in 5/8" thickness and
about $20 Canadian a sheet.


Sorry but you are wrong..

You don't need DensArmour in a garage...Hell , you don't even need green
board...I've sheetrocked HUNDREDS of garages with regular drywall..Both
1/2 inch and 5/8 inch...As long as it is taped , primed and painted it
will be fine....Same for basements unless there is water running in or
some other major moisture problem...In which case you've got other
problems to solve before finishing the basement anyway...Also
DenseArmour is over 20 bucks a 4X8 sheet , regular 1/2 inch drywall is
about 10 bucks a 4X12 sheet , Green board is about 13 bucks a 4X12 sheet
and 5/8 is 12 bucks a 4X12 sheet...1/2 inch OSB is about 8 bucks a 4X8
sheet...US money...DenseArmour is not only TWICE as expensive to buy but
it is also about 4 times as expensive to install and finish tape as it
is a PITA to cut and hang and involves coating the WHOLE sheet with
Setting Type Joint Compound because it is a VERY rough fiberglass face
instead of smooth paper....Mold doesn't play well with the setting type
compound for some chemical reason......FWIW...

" in a working garage drywall alone sucks."

Why ??? It is easily repaired and can be re-painted at will with cheap
flat wall paint....Plywood and OSB look like **** painted...It highlites
all the defects , nail holes and cracks between the sheets....You could
do sheetrock over OSB but I think it would be way over kill for a garage
unless money wasn't an object...5/8 Type X Sheetrock is harder and much
stronger than 1/2 inch if that is your concern...IMHO....


On an attached garage, in many areas, code requires 5/8" firestop rated
rock on the wall between garage and living space, and on the ceiling as
well unless the firewall is extended all the way up to the roof deck.

--
aem sends...