Hey all. OP here. First of all I'm glad this was posted, because when the first blotch came off, I was thinking 'Oh NO! This is so FML!' and yeah - here it is :) And then - to clear up a few things: 1. This is not my first language and 'masking tape' was just what google translater told me 'Malerkrepp' means in English. Anyways: it was the right kind of tape, we used it on the whole house and it worked everywhere else except this particular wall because 2. there was a strange kind of 'wax' paint under a whole lot of other layers that apparently was not fit to be re-painted. Ours is a very old house and we didn't know the former owners used this. But I'm a lucky one. My fiancé filled the gaps in with painter's filling yesterday and after repainting all of it tonight I hope we will truly be done. Finally. And 3. I certainly didn't leave the tape on for half a year! This is just the amount of time we have been working on the whole project. #70 : I loved your comment! Thank you, this really helped and it's exactly what we are doing. Have a nice day everyone! :)