Having removed parquet flooring and the bitumen/asphalt adhesive that
it was installed over, from a back room, I have latexed the floor back
up to level with the screeded floor of the adjoining extension. This
took a lot of latex as the room measured about 15sqm.

The trouble I'm having now is that the existing concrete subfloor
slope downhill, away from the extension, towards the doorway into the
room. I left the latexing with about 1.5m to go, before reaching this
doorway. If I bring it all up to level with the extension floor, I
will end up with a significant 'step' up, into the room!

I was thinking about how I could tease the latex down a gradient to
meet more with the threshold level, without producing a bounce in the
engineered oak flooring that's going over the top of it, but this is
hard with latex as it wants to find it's own level!

I want to try and diminish the slope as much as possible, so that it
doesn't notice too much, but a bounce in the floor would be much
worse.

I know I'm trying to cheat this... can anyone offer up any
suggestions, tips to help?

Thanks very much.
d.