A crooked door frame can drive you crazy—sticking, squeaking, or refusing to close all the way. But a well-installed frame? It makes everything feel solid, seamless, and built to last.
Whether you’re fixing an old one or starting from scratch, the key is precision. Get the angles right, secure it properly, and your door will swing like a dream.
Here’s exactly how to do it, step by step.
Key Notes
- Measure the rough opening and check for level before installing the frame.
- Use shims to adjust alignment and ensure a secure, plumb fit.
- Fasten the frame properly to prevent future shifting or gaps.
- Reinstall trim, seal edges, and finish with paint or stain for a polished look.
- Test the door’s swing and latch to confirm a smooth, secure fit.
1. Gather Necessary Tools and Materials
Having the right tools and materials ready will make the job smoother and prevent unnecessary interruptions.
Tools You'll Need:
- Measuring tape
- Level
- Hammer
- Screwdriver or drill
- Saw (circular saw or hand saw)
- Chisel
- Utility knife
- Pry bar
- Safety glasses and gloves
Materials Required:
- Pre-hung door or separate door frame components
- Shims
- Nails or screws
- Wood filler
- Sandpaper
- Paint or stain
- Caulk
2. Remove the Existing Door and Frame
If you’re replacing an old door frame, you’ll need to remove it first. Work carefully to avoid unnecessary damage to surrounding walls.
Detach the Door
Start by removing the door from its hinges. Use a screwdriver or drill to take out the hinge pins, then lift the door away and set it aside.
Remove Trim and Frame (If Necessary)
Using a pry bar, gently remove the trim and molding around the door frame. Work slowly to minimize wall damage, as you may want to reuse the trim later.
Extract the Old Frame
Locate the screws or nails securing the frame to the wall studs.
ℹ️ Use a pry bar to carefully pull the frame away from the opening. If it’s stubborn, cutting through any nails with a reciprocating saw can make removal easier.
3. Prepare the Rough Opening
Before installing the new frame, inspect the rough opening and make any necessary adjustments.
Inspect the Frame
Check for rotted or damaged wood around the opening. If you find any issues, replace or reinforce those areas before proceeding.
Ensure Proper Dimensions
Measure the rough opening to confirm it matches the new frame’s dimensions. There should be a slight gap around the edges for shims, typically about ½ inch on each side.
Confirm Level and Square Opening
Use a level to check that the floor, header, and sides of the opening are straight. If anything is uneven, adjust it with shims or trim the framing as needed.
4. Install the New Door Frame
With the rough opening prepped, you can now position and secure the new frame.
Position the Frame
Place the frame in the opening and center it. If you’re installing a pre-hung door, ensure it’s facing the correct direction before proceeding.
Level and Plumb the Frame
Use a level to check that the frame is straight on all sides. Insert shims behind the frame at the top, middle, and bottom of both sides to make adjustments.
Secure the Frame
Once the frame is correctly positioned, drive screws or nails through the shims and into the wall studs. Work from one side to the other, checking alignment as you go.
Trim Excess Shims
After securing the frame, use a utility knife or handsaw to cut off any shims sticking out past the frame.
Struggling With Sticking Doors & Crooked Frames?
5. Reattach the Door
If you’re working with a pre-hung door, this step is simple. If installing a door separately, careful hinge placement is key.
Hang the Door
Align the door with the hinges and secure them with screws. If you removed the original door, reinstall it the same way.
Check for Proper Fit
Close the door and check that it swings smoothly and sits evenly in the frame. If it rubs against the floor or doesn’t latch correctly, adjust the hinges or frame slightly.
6. Finish the Installation
The final steps will make sure the installation looks polished and lasts.
Reinstall Trim and Molding
Nail the trim and molding back in place around the frame to cover any gaps.
Fill Gaps and Holes
Use wood filler to patch any holes, then sand smooth before painting or staining.
Seal the Edges
Apply a thin bead of caulk around the trim to prevent air drafts and moisture from seeping in.
Paint or Stain as Needed
If the frame or trim needs finishing, apply paint or stain to match the rest of the room.
Common Door Frame Installation Mistakes & Fixes
| Common Mistake | Fix |
|---|---|
| Frame is wobbly after installation | Add more shims and secure with screws at key points |
| Door rubs against the frame | Check for level and adjust hinges or sand down tight spots |
| Gaps around the frame let in air | Use insulation and apply caulk for a tight seal |
Frequently Asked Questions
Can I install a door frame without removing the drywall?
Yes, but only if the existing opening is the correct size and in good condition. Otherwise, adjustments may require drywall removal.
What’s the best type of wood for a door frame?
Poplar and pine are common for interior frames, while hardwoods like oak or mahogany work well for exterior doors.
Should I use screws or nails to secure the frame?
Screws provide a stronger hold and are easier to adjust, but nails work well for quick installations.
How do I fix a door frame that’s slightly too small for the opening?
Use wood shims and additional framing material to build up the opening until the frame fits snugly.
Can I install a new frame without replacing the door?
Yes, but you’ll need to make sure the new frame matches the door’s existing hinge and latch placements.
How can I prevent future warping or shifting?
Seal all edges properly, use quality materials, and avoid excessive moisture exposure to keep the frame stable.
Conclusion
A solid door frame makes all the difference—get it right, and your door swings smooth and shuts tight. Get it wrong, and you’ll be dealing with gaps, drafts, and constant adjustments.
The key is precision. From leveling the opening to securing the frame and sealing the edges, every step matters. Take the time to do it right, and you won’t have to think about it again.
Need it done fast and flawless? Book a free consultation, and we’ll handle the install—so your door works like it should, the first time.
