I remodel my fireplace and the hearth was poured concrete over:
I plan to install tiles over the 3 sides
However the surface is not even and not 90 degree
You can see the bumps from previous concrete which is not possible to remove at this point unless I use a grinder, which will cause a dust mess in our living room.
I looked at this question before but it is not applicable in my case:
Option 1: Should I try to use mortar and smooth out the surface and make it 90 degree as possible?
Option 2: Or should I just go ahead and install tiles with thinset and try to make the tiles as level and as 90 degree as possible by adjusting the thinset amount?
Both are difficult but it would be nice if I can do Option 2. However, I may end up not making the whole thing even / smooth and it will be a mess at the end.