Have I used too much self levelling?

Have I used too much self levelling?

Have I used too much self levelling?

Hi, I've recently renovated my house (UK, 1930s). I had installed underfloor heating boards on my top level, and self levelled on top of that. Area is 35m2.

For whatever reason, they installed 4cm of self levelling (40 bags over 35m2 - 3 rooms and a hallway)

1. Is this too much?
1.1 if it is too much, do I have an option. (Ceiling height is 2.4m).
2. Do I need to be concerned with the additional weight? Roughly 1000kg of self levelling.

Product used is mapei

Thank you!

by JAB93

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