Prevent User folders from caching locally

Hi @all,

I do IT work for a company that uses profile redirection on all their workers machines which stores on a server.

However, I noticed that user folders are being cached locally on every device and are accessible when not connected to the domain(IE, going into C:\Users and seeing the local folders and files of every user that has logged into a machine). 

How do I go about preventing the data from being cached so that if someone walks in and steals a computer there isn't any sensitive data being accessed? Or do I have to enable bitlocker on all devices?

Thank you for your time.