Yes; As a father I am supposed to knock my daughter door before entering, because
First, I believe it is a respect to female gender.
Secondly it is totally wrong to batch into someone’s room be it your daughter or son without knocking.
As a father , you supposed to respect one’s privacy and to me the daughter must be up to puberty stage

Yes David it’s important that you do knock before entering her room it’s called respect of her privacy.