There is a wooden floor, already old, strong, but the boards are hunchbacked. There is an idea to make a cement screed on it. Infa in the internet is not enough. Who faced the problem? The tile will be on top.
1. What is the minimum screed thickness?
2. How to fill, on beacons?
3. Do I need to reinforce something (mesh, etc.)
Other inexpensive floor leveling ideas are welcome.