Cost to Install a Pre-Hung Interior Door
Installing a pre-hung interior door means removing the old door and frame, fitting the new door-and-frame unit in the rough opening, then finishing it with casing, caulk, and paint. The unit arrives mounted in its frame, but success depends on measuring for room to shim, choosing the correct handing, and setting the jamb plumb and square so the door swings and latches cleanly.
Common reasons homeowners do this job
- An old interior door or frame is worn or damaged.
- A room is getting an updated interior-door look.
- The existing door sticks or latches poorly.
- The door and its frame are being replaced together with a pre-hung unit.
DIY or call a pro?
This is a legitimate DIY project for someone comfortable measuring an opening, shimming a jamb, and using a drill/driver. Consider professional help if setting the frame plumb and square or fastening through the jamb feels uncertain. Support the door unit while shimming because it is heavy and can tip easily, and check for wiring or plumbing in the wall before driving long screws.
Frequently asked questions
- Can I install a pre-hung interior door myself?
- Yes, this moderate project can be a DIY job when the rough opening fits the unit with room for shims and the door handing is correct. A level, drill/driver, hammer, utility knife, nail set, and wood shims are needed. Consider hiring help if getting the hinge-side jamb plumb or supporting the heavy unit while it is being shimmed feels uncomfortable.
- What makes interior door installation cost more?
- The price can rise with the number of doors, labor time, materials, and removal of old material. Small jobs may also be affected by a minimum or trip charge.
- What should I check before buying a pre-hung door?
- Measure both the rough opening and the door to confirm the unit will fit while leaving room to shim it. Check the required door swing, or handing, before buying; a correct fit alone leaves a wrong swing direction unchanged.
- Why does a pre-hung door need support during shimming?
- The door is already mounted in its frame, making the full unit heavy and prone to tipping while the jamb is being adjusted. Keep it supported as the hinge side is shimmed plumb, then secure that jamb through the shims into the framing.
Have a different situation?
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