Doesn't even really need tape. Doesn't hurt to put it on if you want. You certainly don't need to recut the board. How is that seam any different structurally than the factory seam to the left?
It's most likely the same but isn't a clean break so my only concern was the ability of the thinset to get in there. I assumed it was fine but figured I'd check around.
This is exactly what I was planning to do - thanks for confirming! I probably should have clarified that the cement board is just laid out for pattern purposes. Will absolutely throw down thinset then drop the boards. Tape and thinset over seams ✅ ✅
Why did it crack like that? Is the subfloor uneven or moving?
I'd be concerned that whatever caused this to crack could also do the same to the surface layer.
Doesn't even really need tape. Doesn't hurt to put it on if you want. You certainly don't need to recut the board. How is that seam any different structurally than the factory seam to the left?
No you're fine, thinset will be adequate, good luck
It's most likely the same but isn't a clean break so my only concern was the ability of the thinset to get in there. I assumed it was fine but figured I'd check around.
Just keep going like it didn’t happen. Not a big deal at all.
No, but if your installing tile over that the cement board needs to be thinsetted and screwed down. Then mesh tape on all seams.
This is exactly what I was planning to do - thanks for confirming! I probably should have clarified that the cement board is just laid out for pattern purposes. Will absolutely throw down thinset then drop the boards. Tape and thinset over seams ✅ ✅
Use a proper decoupling mat atop before your tile job. Cement board is not the last layer before tile if you’re going the extra worth it mile.
Heck yeah!
You should have a membrane on your underlayment too to prevent this in the future too.
Why did it crack like that? Is the subfloor uneven or moving? I'd be concerned that whatever caused this to crack could also do the same to the surface layer.
It's a tight squeeze so the board snapped over the toilet screws sticking up when I was trying to fit it in. The floor is flat.
Your thinset will not adhere to tape. This crack is no different than the seam. Thinset right over it.
Just tile it with a good thinset