Sure but dry wall has paper on both sides. To prevent frost/mildew/water building up you need something to insulate the drywall from the elements. Otherwise the paper will rot and you you'll start to get mold etc. Which will not be good.

"Seal Toi" (Dan Acroyd, Coneheads reference.)

So far I've only worked with DOS, Windows 3.1 and up, Mac OS X (I won't include the play time on earlier macs.) and a flavour or two of Linux. What allows me to be move productive is the ability to move around the OS with just the keyboard. I code and having to move a hand from the keyboard to the mouse breaks the momentum. I find windows the most complete with regards to keyboard navigation. There are only a few things that is won't do well. Mac OSX is a little clunky in this respect; like getting to the menu and navigating to a menu item. Linux (Gnome, KDE) has some of the basics but I find I can't do some cirital thinks without using the mouse. Computer config also helps though so my opinion is a bit unfair. My windows box is dual headed. Which is great to have for graphics and development work. My mac is just a laptop with limited resolution plus a frustrating keyboard. My inexperience with Mac also a cause of annoyance for me being a major PC user. PC's have shift, control and alt as their modifier keys. Macs have shift, control, option and splat keys; include 'fn' key for laptops as well as you need it to get to the pgdn, pgup, home and end buttons. I'm always getting the common keyboard combos wrong as I'm used to using control mainly instead splat and splat is where alt is on the pc. Plus behaviour differences don't help... Hrm... This is turning into a gripe. :P I think most will end up saying the OS they used the most as they know it the best. Having to move to a new system will require a brain washing to unlearn all the habits.