http://ift.tt/2yNJ1Kc was removing some old nasty wallpaper in our basement bathroom, when I uncovered this stuff on the wall surrounding the bath. I had planned on removing the wallpaper and then painting the walls, but I'm not sure what this stuff is or how best to deal with it.Any help/advice would be appreciated! via /r/DIY http://ift.tt/2yKEHcO
