Preparing concrete slab (at grade) for ceramic tiles
The books stress having the slab flat, grinding the high spots and
filling the low ones. But just how flat does it really have to be? Can't
I just use a little thicker layer of mortar to fill the known low spots
as I lay the tiles, especially if I "beat" the tiles into the mortar to
assure good contact as some books recommend?
Some books and websites also stress the importance of a level slab.
What's so bad about it not being level to within 1/4" per 10 feet?
My slab is at grade.
Thanks,
Ray
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