> Your plasterboard/drywall looks different to what I'm used to. Here in the UK we have plaster with a thick paper surface. The photos in that advert imply to me that you have a woven surface of some sort in Japan.

I just assumed that was wall paper. We had it in a living room of a house built in the US in the 1980s, it had 40 years of paint on it and was never coming off the drywall.