Floor Tiling on Uneven Screed

[Invisible-Man]

Hi,
I have not long had a screed laid in my new games room approx 40m over 3 rooms, the screed has been laid very badly and is out by up to 1" in places. The screed at the doorway is the correct height and everything that is out, runs lower than this, now there is too much area and discrepency to use floor levelling compound (would cost an arm and leg) and do not want to chop the floor up, soooo what would be my best solution to lay a flat tiled floor, ie could I lay a wet screed of a strong soft sand and cement, ruling it off some predetemined levels.

What would you proffesionals do in this situation please!

Many thanks, Martin

 

[Softus]

Hi,
I have not long had a screed laid in my new games room approx 40m over 3 rooms, the screed has been laid very badly and is out by up to 1" in places. The screed at the doorway is the correct height and everything that is out, runs lower than this, now there is too much area and discrepency to use floor levelling compound (would cost an arm and leg) and do not want to chop the floor up, soooo what would be my best solution to lay a flat tiled floor, ie could I lay a wet screed of a strong soft sand and cement, ruling it off some predetemined levels.

What would you proffesionals do in this situation please!

Many thanks, Martin

Personally, I'd use a laser level and place small lumps of brick (or similar) presenting a flat face upwards, held in place by dobs of sand/cement, so that you have something to work to. Prime/bond the floor surface, then lay screed mixture to bring it up to the correct level wherever it's wrong.

Or, you could use levelling compound, bulked out with aggregate.

BTW, I don't know what you mean by "strong" in this context, but in any case I'd use sharp sand, not soft, for the screed.