cracking

[White Room]

You can use sand or grano chippings to bulk out the slc for deeper areas or mapei ultraplan maxi will do upto 30mm depth

 

[DHTiling]

I would re-do for piece of mind........

Many levellers about that will a good depth as well...mapei do a few fromt he one above thats good and pci do onw that does upto 60mm in one bite with no aggregate needed..

But i do prefer mapei slc's especially the fibre plan...very strong slc...suitable for over timber as well if needed..