Jon Weaver wrote:
My screed floor looks flat, but its certainly not.

Comparing the high and low points, there is upto 10mm difference in
height.

I was originally going to put some self leveling down, but my
neighbour (who is a tiler) talked me out of it. Instead, he said that
I could vary the thickness of the adhesive to level the floor.

Is this suggestion OK? If so, whats the maximum thickness of adhesive
that I can lay?

Jon

You can take up quite a bit of irregularity with flooring adhesive that you
mix from dry powder, because its cement based. However, 10mm sounds a lot
unless its just the odd void that you could splodge in more adhesive.
If its a slope or change of level of 10mm between two side of the room I
would suggest this could be quite tricky for a DIYer to compensate for esp.
if you haven't laid floor tiles before.