My brother is a carpenter and just installed crown molding for us but according to pictures I have seen it seems to be upside down. It is standard crown molding and it was installed so the smaller cove is toward the ceiling and the thicker or wider more pronounced section on the wall. He says that all of the builders he works for have him install it this way. I also called some lumber stores and the majority of them have told me that the correct way to install it like my brother did. Is this the new way of installing crown molding?

Thank you

Thanks for the response