Do I need to supply IPC documents to PCB fab house?
If the fab house does not have access to IPC documents, then they have no place building anyone's boards. IPC documents are THE STANDARD for PCB design and manufacturing, and are only available by purchase and/or subscription, so even requesting that you send them a copy is unethical, if not illegal. My advice to you would be to run. Don't give them your business - they sound very shady to me.