What are the Different Types of Interior Doors?

An interior door is any door that does not provide access to the outside of a home or building. Closet doors, bedroom doors, bathroom doors, and office doors are all considered interior doors. There are several different types of interior doors, many of which are used in both residential and commercial construction. Standard interior doors are simply one-piece doors that fit an opening and are mounted on hinges to one side of the opening. They swing out or into a room, depending on installation, and can accommodate an interior doorknob, which can be locked from inside the room. Some standard interior doors are solid wood, but many are hollow. They can be stained or primed and painted. A six-panel door is also a standard interior door, but with recessed panels added as a design element. Another type of interior door is the bi-fold door. Bi-fold doors are one of the most popular types of interior doors used for closets and between two frequently used rooms. Bi-fold doors are two doors ...  more