When installing an interior door frame, the frame must be?

The requirement for an interior door frame to be flush with the wall finish on both sides is crucial for both aesthetics and functionality. This ensures that the frame is level and properly aligned with the surrounding wall surfaces, creating a seamless appearance. A flush installation not only enhances the overall look of the room but also creates a proper seal for the door, which is important for energy efficiency and security.

When the frame is flush, it minimizes gaps that could lead to drafts or moisture damage. Additionally, flush frames are important for the correct installation of door hardware and hinges, which generally expect a consistent and even surface for optimal operation.

While decorative trim can be added for aesthetics, it is not a requirement for the proper installation of the frame itself. Likewise, an interior door frame does not rely solely on adhesive for security; it typically needs to be fastened with screws into the wall structure for stability. Adjusting to fit uneven walls can be necessary in certain situations but does not address the fundamental requirement of being flush with the wall finish, which is critical for a successful installation.