Basement as a white tank - heating?!

Hello everyone,
I have been a silent reader here for a very long time and find the helpful answers pretty good!
We are also slowly venturing into the topic of house construction and are now shortly before the floor plan planning of a semi-detached house.

We are currently stuck on the topic of the basement. Due to water pressure, we are planning with a [white tank].
I have now read an extreme amount about the topic, but actually have even more questions than certainty or knowledge.

What about the topic of heating a [white tank]?
--> We want to hang laundry in one of the basement rooms

What about the topic of perimeter insulation and vapor barrier?
--> Does that also play a role in heating? Should all rooms then be insulated from the outside if they are heated?

Do I absolutely have to heat all rooms if insulated from the outside?
Does a complete underfloor heating make sense, possibly even a ventilation system (underfloor heating and ventilation in the rest of the house available)??

Thanks already in advance for your help!

Hello everyone, I have been a silent reader here for a very long time and find the helpful answers pretty good! We are also slowly venturing into the topic of building a house and are now just before the floor plan planning of a semi-detached house. We are currently stuck on the topic of the basement. Due to pressing water, we are planning with a white tank. I have now read a lot about the topic, but actually have even more questions than certainty or knowledge. What about heating a white tank? --> We want to hang laundry in one of the basement rooms What about perimeter insulation and vapor barrier? --> Does that also play a role when heating? Should then all rooms be extra insulated from the outside if they are heated? Do I necessarily have to heat all rooms if insulated from outside? Does a complete underfloor heating make sense, possibly even ventilation (underfloor and ventilation in the rest of the house available)? Many thanks in advance for your help!

We also have pressing water, but I never really thought about it and also think that these are not necessarily required. ---> Hanging laundry in the basement rooms - I see absolutely no problem at all. That is one reason why we are building a basement. --> You can also have your underfloor heating installed in the basement. We most likely will not do that because we do not necessarily need it in a utility basement like the one we are building. It is also a cost factor, but definitely feasible. --> You do not necessarily have to heat your basement, but obviously you have to heat your rooms on the ground floor and upper floor.

Thank you for your response. I have read many forum posts about stock stains, poor indoor climate with white bathtubs, and generally moisture on the interior walls. Does anyone here have problems with this?

Thank you for your answer. I have read many forum posts about mold stains, poor indoor climate with white tubs, and generally moisture on the interior walls. Does anyone here have problems with that?

With centralized controlled residential ventilation in the basement, underfloor heating, airing out, and occasionally turning on a dehumidifier, there are no mold stains or poor indoor climate, and at least my humidity has been around 60% plus/minus 5% after almost one year now. But I also don't know what you expect from your basement because without the above measures your humidity will stay above 65% in winter and around 70% upwards in summer. At a constant high 60% or 70%, it slowly starts to get musty.

With centralized controlled residential ventilation in the basement, underfloor heating, airing and occasionally turning on a dehumidifier, there are no mold spots or bad indoor climate and at least my humidity level has been around 60% plus/minus 5% after almost 1 year now. But I also don’t know what you expect from your basement because without the above measures your humidity will stay above 65% in winter and around 70% upwards in summer. Sustained humidity in the high 60% or 70% range slowly starts to cause mustiness.

Thank you! I only know dry, non-musty basements from friends and relatives. At least with the relatives I can say that they do not own dehumidifiers and only partially heat their basements. However, these are all masonry basements where groundwater does not play a role. My question was aimed at experiences and whether I have to take measures with a white tank. The answer is therefore yes. Heating, dehumidifier and ventilation. For me that also means that I have even more (ongoing) costs, even if I only store things in there.

Masonry or white tank, what role is that supposed to play? With a masonry basement, you will certainly have problems and moisture after a few years.

You don't have to heat the basement. However, it is advisable if you want to use the rooms for other purposes as well. It will never be cooler than 18 degrees in winter and about 20-21 degrees in summer. Humidity in winter at 50% and in summer as Zaba said, at 60-65%.

If you do laundry and dry it, you definitely have to run the dehumidifier sometimes, otherwise it will get musty. But that is also logical, since a basement cannot be ventilated as much. In summer, you actually shouldn't open the windows at all.