Hello!
The house we live in was drained in the 70s, and we've had some moisture penetration in the basement walls. The problem is that one of the walls in the basement is also, so to speak, an extension of the retaining wall that also runs along the property line with the neighbor. So you could say that on the other side of our basement wall is the neighbor's land. Trying to show with an attached picture... To drain that side, we would have to make significant changes to the neighbor's property and the costs to restore it (if we are allowed to do this at all by them). Therefore, I'm trying to find alternative solutions to draining.
I've been thinking a bit, and as I understand it, it doesn't really matter if the concrete is damp, as long as the moisture can migrate through it. Is that correct? Could one then do something like putting up a Platon mat on the wall and maybe some mechanical ventilation that ventilates the air gap that forms between the Platon mat and the concrete wall? Then on top of this, frame up (with steel studs and insulate) to mount wall panels (in gypsum). Do you think that could work?
I also saw something called Penetron, which is a method/system for capillary waterproofing of concrete. This is supposed to seal but still be vapor permeable. Could that be something?
I also saw this... a technique for, internally, addressing problems with leaking walls:
http://www.leak-proof.com/interior_weeping_tile.htm. Could that be something?
Then I thought a bit wildly that one could cast underfloor heating into the walls. Then you should get a warm and dry wall in the basement. There are certainly a lot of disadvantages to this. But I know too little about this to see these disadvantages. But could this be something?
I know that nothing compares to external drainage and insulation, but what are the other alternatives? Which might not be as good... but almost

)
Grateful for any possible tips I can get!
Best regards,
/Robban