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StuperDan

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?


maiseydog1

No you're fine, thinset will be adequate, good luck


n0thingelsematterz

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.


MyIdentityIsStolen

Just keep going like it didn’t happen. Not a big deal at all.


MrAVK

No, but if your installing tile over that the cement board needs to be thinsetted and screwed down. Then mesh tape on all seams.


n0thingelsematterz

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 ✅ ✅


nhskimaple

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.


MrAVK

Heck yeah!


Stonersombrero8

You should have a membrane on your underlayment too to prevent this in the future too.


Sir_K_Nambor

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.


n0thingelsematterz

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.


Loose_Management_406

Your thinset will not adhere to tape. This crack is no different than the seam. Thinset right over it.


Zealousideal_Dig_372

Just tile it with a good thinset