Answer:
I am bought by the yard but worn by the foot
I let water fall on you while everyone else stays dry.
The more of me you take, the more I appear behind you. What am I?
I climb higher as I get hotter. I can never escape from my crystal cage.
I live off of a busy street if you want you can stay for an hour or two but if you don't pay rent I'll tell on you.
Both old people and owls are said to be possessing this trait