Replacing damaged shower wall tiles
Recently we decided to remove the sliding glass doors from our guest bathroom shower. Well, when we took off the side frames, some of the shower tile came with it. We don't have the time or the resources to retile the entire shower, so we're just going to replace two vertical strips on each side of the shower. In the process of removing the tile, a lot of the top of the greenboard came off with it (i.e., the green part). So basically what we have is the greenboard with the top layer missing. So, my question is, can I just put down some backerboard over this exposed area? Keep in mind that we're considering this to be a temporary measure, knowing that we'll have to retile the entire shower in a year or two.
Thanks for any help you can give!