Bent cement board while installing onto floor...will it be ok?
bent or cracked ? best that you get some cement and smooth it down or screw it to the floor if trhis is in prep for a tile floor then it will be OK .....
well i hope youre not using actual thinset. Thinset is for wall tile :p You want mortar. and 1/4 backerboard would have been plenty, but too late now :p even if the board cracked...assuming you screwed it down well, and mortared underneath it, it's fine. No worries.
