Replies

1. 
   teasea | Oct 02, 2003 05:55pm | #1

   I dont use green board at all its to brittle!

   jmo

2. 
   Manchild | Oct 02, 2003 07:06pm | #2

   I've seen it used on walls that are where water is going to be used or splashed alot.

   If the room has an exhaust fan condesation shouldn't be a concern.

   If that is your reason for putting the green board on the ceiling.

3. 
   stonebm | Oct 02, 2003 07:26pm | #3

   Careful with the ceiling installation.  You may or may not be aware of this- but the manufacturers of greenboard recommend joist spacing of 12 inches, so you may have to add strapping if your framing is 16 inch OC.

4. 
   CapnMac | Oct 02, 2003 10:37pm | #4

   Greenboard is good all around, you just have to know its limitations.  Like 12" OC spacing for ceilings.

   That being said, I still prefer a cementitious board (like durock) for behind tile, or any other place where moisture penetration will be hidden.

   Ok, that's a bit of "overkill" at the new construction point, but it also relfects the tear out I've had to do in bathrooms 3-4 owners down the line.

1. 
   MEHoffman | Oct 03, 2003 02:40am | #6

   Yes I did know about the 12" centers, that's one reason I didn't want to use it. The shower unit is fiberglass and there will be a fan.

   Thanks

5. 
   rasconc | Oct 02, 2003 11:23pm | #5

   The other guys are right.  I put two 4x8 sheets in a small bathroom with old 16oc joists.  By the time I got it to stay up it looked like I had used that DeWalt AR-15 (new DeWalt tool post) on full automatic.  The green paper is too soft for ceiling install with 16oc and the screws pull through very easily.  If you have enough moisture to really need it you should to do something else.  I do not think it is any more brittle as someone else said.

6. 
   NickNukeEm | Oct 03, 2003 05:23am | #7

   Today I put on the second coat of JC on the rock I hung for a bathroom renovation currently in progress.  The HO spec'd (and actually bought) nothing but greenboard for the job.  Because of the ceiling layout, I had to use 4 pieces no more than 54" in length.  And there are enough screws up there to hold together a small ship.  It's the first time I've used it on the ceiling, and other than maybe requiring an additional coat of primer, I see nothing wrong with it. 

   Be sure and use a setting compound for the first coat, primarily in the areas where water may contact the surface.

   I did have more screws punch through the paper than usual, though whether or not that validates the soft paper issue, I don't know.  I just sank a few more to compensate.

   I never met a tool I didn't like!
7. 
   Tapcon | Oct 03, 2003 06:06am | #8

   Green board, in my humble opinion, is a good product. The thing to understand on the front end is that water will degrade it in much the same manner as will to ordinary drywall. It just takes a little longer.

   As far as workability goes, I don't see a dramatic difference that should discourage use. 

   
   

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   Edited 10/2/2003 11:10:23 PM ET by Tapcon

8. 
   dmw | Oct 03, 2003 07:41pm | #9

   Mike,

   I've sheetrocked a lot of houses and always used MR board in bath rooms

   and never had any problems, even with joices 16" o.c. As with any rock, make sure it hasn't been left outside. High moisture will make it really floppy and soft. I like to glue and screw it - prevents nail pops later.

   Also, I recomend that you shim (1/4" or so)around the fiber glass shower, so that the rock doesn't taper over the flange of the tub. If you don't the inside corners look crummy, and you chance nile pops because of too much pressure.