I did a noob mistake in my first major DIY project of bathroom remodeling When I installed the cement backer board I left some gap between the cement board and the drywall. On top of that when I installed the tiles I did not go all the way to cover the transition between cement board and the drywall. Now I have this gap with the Schluter transition strip on the bottom, membrane coated cement board on the back and the drywall on the top. Please see the attached picture. Also note the drywall and cement board are not levelled.
The question is how do I fill this gap? Some options that come to my mind are:
- Fill it will cement, coat with drywall compound and paper tape and topcoat with drywall compound
- Fill it with narrow and skinny(1/4 inch thick?) drywall strips, coat with drywall compound and paper tape and topcoat with drywall compound
- Fill it with narrow and skinny(1/4 inch thick?) plywood strips, coat with drywall compound and paper tape and topcoat with drywall compound
- Fill it with Hot mud(I have 90 minutes USG), coat with drywall compound and paper tape and topcoat with drywall compound
- Fill it with foam backer rod, coat with drywall compound and paper tape and topcoat with drywall compound
- Fill it with foam backer rod and caulk.
There could be other options I am not aware of. I am really confused as what I should do.
Please help!!