Simple drywall/sheetrock question

I don't know about code specifics, but generally 1/2" is used everywhere for ceilings, wall, closets, etc. If there are fire rating issues, for example, then thicker may be required. I would never use 1/4" for anything, unless it was absolutely necessary because of a critical space or similar issue. And even then, it better be a protected area, because 1/4" is flimsy.

I bought some 1/4" couple years ago for just such a need. As I recall, it was about the same price as 1/2" too, so you're not saving anything.

Well, around here, 5/8 is used for firestop, that is, a ceiling in a room below a bedroom.

Otherwise, 1/2 is the norm for almost everything.

I use 1/4 for making arches, such as arched doorways, because it is easier to bend, especially when wetted down.... If it seems too flimsy, just put another layer of 1/4 over the first.

I am not aware of the uses of 3/8...

On 6/17/2013 7:35 AM, Robert wrote: ...

Find it in spec/low-end housing (as in cheap) simply for that reason. If building large spaces it can be a noticeable input cost differential to the developer.

Some will try it for ceilings for the weight -- w/ trusses (2x4 flat surfaces) the net span on 16" centers may be enough to keep bowing from being too excessive.

Otherwise, for OPs question, it would be a passable alternative for his proposed closets and other low-traffic areas for (as noted) minimal cost-savings.

I have used 1/4" in 3 situations:

2 - Similar situation for a bathroom ceiling with a flat section and a sloped section with a curved junction. Bending the 1/4" worked OK, but I smoothed out the curve with drywall compound. Glued and screwed. I had scraped and sanded the original plaster too many times to want to do it again. The drywall has held the paint for many years, something I can't say about the plaster.

I agree that it needs some sort of backing, 1/4" is too flimsy to be used by itself over a large area.

Yes, good point. If it's going over existing to make a new finish, that makes sense too.

It's good for curved surfaces. Put on one layer - wet if necessary - then another layer on top.

Couldn"t I accomplish the same thing by getting 1/2" drywall twice as wet? ;-)

I've use it where I wanted the appearance of a drywall finish, but had no code or structural issues to be concerned about. Like a closet liner. Main advantage is ease of use with the low weight.

or make cuts on the backside to help it bend. Lots of cuts every half inch or so