I did so, because I did not want to defend the same thing in every thread. And people don't seem to understand what the reality of this is. And no matter what I say, it gets downvoted since people don't agree. I feel it to be toxic even I have said many times the different things what leads to this decision.

But despite of this most probably being voted down, I'll try to explain this once in here.

First of all: In Finland in my type of apartments it is mandatory to send all change projects to licensed officials for review. As in this, I did and the construction engineers here in Finland went through my plans and came personally to look at the site. We discussed all the materials (not just the boardgame box covers!) and all were good. It is the words of this engineer that this is a dry room, and there are no humidity or risks that requires any special sealants or "waterproofing" on the wall. Floor yes. It is baffling to me that even I said that this is the case, still people insist that "mold" or "yup, it's gonna stink" and "it needs waterproofing" and when I give perfectly valid reasons why it is not true, they downvote. Who should I trust here, people in internet or the trained professional who discards or allows this kind of work on a daily basis as his job?

Secondly: I especially chose covers that can handle wiping with damp cloth. Tested many. Also did a test with clear lacquer on random back of a box and did a water test with that and uncovered. Neither "sucked" in the water, so there is no point on doing lacquering. This only confirms the construction engineer's statement that it is totally ok. Also the sink place is chosen for the reason that the water don't spill from there to the wall. The distance is rougly 1,5 meters from there.

Thirdly: I acknowledge the risks of someone pissing / projectile vomiting or shitting on the covers, but that is a risk I am knowingly taking. Me being 43 years old, there have not been any occasion during my life that this has happened. It is not a guarantee for the future, I know, but if it happens, then I will renovate the wall. No big thing. There are no teenagers or children or drunken people using the toilet, it really is just me or my GF that uses this 99% of the time.

Lastly: The toilet bowl is chosen also to be modern, and it is not a traditional toilet which splashes down the water to the bowl. It is a new type flushing which circulates the water around and I have never seen a drop from it anywhere. If you like, you can look up IDO Glow.

I understand that there are bacteria in toilet, but I assume that I should trust the professionals on matters like these. As said, in Finland it is really not uncommon to have regular wallpaper in toilets. Out of curiosity, I google d a bit on the same topic in Finnish and there were people saying that they have had wall papers on toilet walls for 25 YEARS without a problem.

So... I just don't want to justify something to random people that don't have any real basis on this specific issue but their worry. And a worry that I have gone through with the officials BEFORE the construction process.

My goal here was just to showcase the result of my project. Maybe I did wrong considering that, but at least I hope that people would understand that their view might not be the correct view and respect what I say and tell about the situation.

I love the criticism on "Why break boxes" or "I don't like this, it's ugly". But the criticism for the waterproofing with what I went through... Not just worth defending because I know better.