Preparations joists tiles

[Huddingebo]

Laid tiles in a part of the kitchen near the stoves.
There was about 50% concrete and 50% joists.
So to avoid cracks, I skipped the chipboard and leveled the entire area with self-leveling compound, about 4cm thick.
Fiber-reinforced Finja self-leveling compound and reinforcement mesh.

It became flat and nice to lay tiles on.
In the area with only joists, I installed 12mm plywood between them, level with the top of the joists.
Feels like it turned out really well.

 

[Krille-72]

as long as about 3600

I can't really make sense of your pictures. Is there construction concrete under your joists?

 

[Olofolofolof]

Thanks for the great post. The old beams do not sag but are not completely straight. Not the best picture. There's only gravel, no concrete under/between the beams.