Basement insulation without ceiling

Hello,
I plan the following:

To get rid of the cold from the ground floor, I want to insulate the basement (house built in 1974, terraced middle house, fully basemented).

Insulating the ceiling is not sensible because all door frames only leave about 3cm of space to the ceiling.

I thought of the following:

Fitting the walls inside with a batten construction, clamping mineral wool (compression felt) in between, and then cladding with

OSB or drywall panels.

What do you think?

(The previous owner had done this in one room, but with old glass wool. I had to dispose of it (harmful to lungs). I have found neither mold nor moisture.)

Should/can I do the same with the floor (existing tiles, vapor barrier, battens, mineral wool in between, and thicker OSB panels)?

(I would rather not work with PU or other plastics, as they probably cause more problems with moisture.)

Thanks for your help!

I can’t say much about the technical execution – but does the basement really get warmer just because it is insulated? My bed doesn’t get warmer than the bedroom, either, as long as I’m not lying in it...

What I’m getting at: If the basement is not heated (which I assume), then the insulation might delay cooling down a bit (but also heating up). Sooner or later, however, the temperature is the same and so is the coldness on the floor.

Well, the walls and floor in the basement are already cold. The basement is not supposed to be heated; I thought my plan could work passively so that the basement does not cool down too much. We already have cold feet on the ground floor...

Anyone else have any ideas or tips?

So please correct me. But my rudimentary basic knowledge of physics tells me that the plan wouldn’t change the floor temperature on the ground floor much. The prerequisite for that would be that the basement is warmer than before. However, heat only comes from heaters (not much sunlight gets into the basement). The heating heat from the ground floor rarely goes downwards; it wants to go upwards.

I estimate that the soil under the basement always stays quite close to the annual average temperature. So about 10-12 degrees. And that fluctuates by maybe a maximum of 3-4 degrees. And that very slowly. Insulation is good if you want to dampen rapid fluctuations (day vs. night), so it works quite well above ground too. But even there the insulation doesn’t change the fact that in winter you have to heat (and possibly cool in summer). So if you want a permanent temperature different from the environment, energy must be consumed somehow.

The basement has neither rapid fluctuations, nor do you intend to add energy. Ergo with this action you only lose living time, living space, and get a potential mold problem.

Since you are asking for other tips: One could at most try to keep the heat more in the ground floor by better insulating the ground floor floor towards the basement ceiling. Then the floor is more like warm as the air on the ground floor and not as cold as the basement ceiling.

Hmm... I kind of feared that. It would have been too good to be true.

So I have no choice but to insulate the ground floor ceiling from below. Although at least the swinging area of the cellar exit door is problematic. The panel has only about 4 cm of space to the ceiling.

It's not unpleasant that the cellar itself is cold. But the cold floor on the ground floor caused by this is not nice, especially in winter.

Can you recommend something to me? What insulation material should I use best for the ceiling?

Thanks and regards

What kind of flooring do you have on the ground floor?