I'm remodeling a kitchen which will have tile extended to the ceiling behind the counters. Currently there is relatively new sheetrock installed where the counters will go. However there is insufficient electrical, plumbing, and mounting surfaces for open shelving. I'm debating removing some sheetrock to make my life easier. Since the entire wall will be covered with tile, hiding the patch shouln't be an issue.
Here is my question. I'm debating removing 5 vertical feet and replacing it with 3x5 green board. To be completely clear, I do not care if you think this is a waste of money. Here is what I do want to know:
I want to know if there is a really good reason, besides money, why I shouldn't do this.
Is it sufficient to cover the joints behind the cabinet with mortar or would I want to skim coat the entire thing?
when bridging the gap between sheetrock and greenboard, should I use mortar or joint compound?