Uneven floor......help!

[surflaur]

I have a floor to level and tile next week. It goes into 3 different rooms and the larges has a drop off off about 40mm!

3 questions....

I was going to take the highest threshold and laser all the walls and mark the height? is this the way to go?

How deep will the bal levelling go bulked out with 3mm chippings? What will happen if it is to deep?

And how do i stop it from sinking in the centre? I was going to hammer nails in to the sub floor and mark the height needed.

Any advice welcome cheers Laur

 

[brian c]

What about leveling the low bits with rapid mutiflex and then tiling on this.Got a tip from GAZ to speed up drying process of multiflex use hot water instead of cold.Hope this helps

 

[DHTiling]

use arditex 2 part leveler this will go up to 50mm with chippings costs about £20 squid 20kg powder & 5ltr liquid combined, just get floor flat no need to get perfectly level.
c.t.d. sell this product... dave.....