Use of green board on shower walls

[Kray]

I have installed green board in new shower area, which will be tiled with ceramic tile. Have I made a big mistake by installing green board as the surface on which the tile will be installed, or will this be OK? From what I have read, use of green board as a substrate for tile used to be common but in recent years the recommendation has been that some type of cement-based backer board should be used. I believe I have installed the green board properly - horizontally, with factory edge down, 1/4 " gap between green board and shower flange, etc. So can I stick with the green board given that it has already been installed? Do building codes still typically permit green board to be used in a wet area such as shower?
Thank you.

[Wgoodrich]

The building Codes do not recommend or approve a specific brand of board. The installation instructions should state if listed for use as you are using it. I believe if you check installation instructions or UL listing of this product it is fine installed as you said.

Good Luck

Wg

[imported_joed]

Don't know what the codes say, but green board is not waterproof. It's only water resistant. If it gets wet it will fail the same as regular drywall. I would change it to a cement backer board. There are several brands.

[Shelby]

you can leave the green board on and cover it with a Schluter product called Kerdi. it is a plastic membrane that has a fbric embeded on both sides but provides a vapour barrier .Check out Northland Construction Supplies @
http://www.northlandconstruction.com/setting_materials.html this is recomended for the walls and Ditka for the bottom under the floor tiles

[Fischer]

I have only replaced about 120 tile shower walls because of moisture damage. I wouldn't use it on a bet, although I have never used the product
Shelby has recommended.

My recommendation is Denshield. It's a sheetrock based product with a textured vinyl overlay. Easy to install and foolproof. Tile sticks very well with thinset. My hands down favorite to install.

[WVCowboy]

I had a problem where original owner of my home had standard drywall right against the fiberglass tub enclosure - no caulking or anything. Needless to say, it was soft from years of showering.
I cut that out and replaced with greenboard. Tiled overtop of it. Sealed my grout and ran a bead of caulk where the tile and fiberglass enclosure meet in addition to the grout line. That was 4 years ago and it's in tip-top shape.

[markjed]

Green bd will work for a time but as your grout fails so will the green bd if u have not tiled yet i sugest u take it down and install a wedi bd or a concrete based bd. these are waterproof. Wedi has a great system u will love it u can get it from tile distributors they r very helpful and they may have a vidio u can watch. Concrete board u can get anywhere or if u wish u can use a tile backer all of these I prefer 1/2 inch thick. Good luck have fun tiling

[softdome]

Concrete baker board is compatable with cementous thinset mortar. If you get a grout leak due to age it will not allow the tile to loss bond as the tile, thinset & backer are compatable product. You just regrout.

[Bismarck Jack]

this is an old Thread folks. I am certain the project is completed.:wavey::wavey: