I've been doing this since the 90's: go to any home building supply store and purchase a "shower wall", same thing described in the article. I remember my first one was far larger than my entire wall, and it was $7. I just used screws to mount it. I also did this at a visual effects company when I was hired, the staff thought I spend a fortune covering my office walls with whiteboard, but after I explained the entire studio soon was all whiteboards.