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Question:

Is it ok to have green boars drywall under cement board that will be tiled?

We recently hired a contractor to remodel the entire bathroom due to water damage. We are getting close to tiling. There is a tub going in then the walls will be tiled for the shower.The contractor put green board in the entire bathroom first. Then he put water barrier paper over the green board in the areas that will be tiled. Then put hardy backer cement board over that. Is this a good way to do it? There is no cement board below a certain height because the tub will be there. I wasn't sure if this is a good way to do it?

Answer:

Excellent way to do it.. The green board, vapor barrier and the cementrous board is one of the best tiling techniques for water protection. edges must be treated for the tile , either in a special tile trim ( most are called an A 4200 but there are other trims, depending on the type of tile you have) or the metal edge to finish it off. The person is doing it correctly. Any questions you can e mail me through my avatar and check my qualifications there. GL
May 11, 2017
It's fine. I wouldn't have put the green board up where the cement board was going up, to save time an money. The green board is unnecessary there. But, it won't cause any problems.
May 11, 2017

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