I hung 5 strips, floor to ceiling. By the middle of the first night (woke up to use the facilities), they were all falling down at least a little bit. I got out a roller and smoothed them all back up. Every third day, a strip would start to fall, and I'd get the roller out again. Today I came home from work and one piece was all the way off the wall and crumpled up on itself. I tried to pull it back apart, but after about 10 minutes of not getting very far, I threw it away. Another piece would have been all the way off, but I had re-hung pictures and they stopped it from coming all the way down.