Solid-core wood door installation: a step-by-step field guide
Wood doors are unforgiving — they're heavy, they don't bend, and every cut is permanent. Here's how to hang one cleanly the first time.
A solid-core architectural wood door can weigh 80 pounds or more. That weight is exactly what makes it feel premium — and exactly what makes it punishing to install if you skip a step.
Tools and prep
- A second pair of hands. Don't try to hang a solid-core leaf alone — you'll either drop it or rack the frame.
- Sharp chisels, a sharp utility knife, and a router or hinge-mortise jig if the door isn't pre-machined.
- Shims, a 6-foot level, a combination square, and a deadblow mallet.
- Painter's tape (low-tack) for marking cut lines without leaving residue on the finish.
Check the door before you touch it
- 1Confirm handing against the door schedule and your frame.
- 2Verify pre-machining: hinge locations, lock cutout, and any vision-lite cutouts should match the frame and hardware schedule.
- 3Look for shipping damage — dents in the edges, chips at the corners, finish defects. Now is the time to reject a damaged door, not after install.
- 4Lay it flat on a clean surface (sawhorses with carpet or foam) and recheck dimensions: width, height, thickness.
Most solid-core doors have a softer interior core. Trim too much off any edge and you can expose it — which weakens the door and creates a paint or finish problem. If you need a bigger cut, order a custom-sized door instead.
Hanging the door
- 1Set the hinges into the door mortises and start the screws — but don't seat them yet.
- 2With a helper, lift the door into the frame and align the top hinge to its mortise on the jamb. Drive one screw to hold it.
- 3Open the door 90 degrees so the weight is supported. Now seat the middle and bottom hinge screws. Use the long screws (2-1/2" or longer) in at least one hole per hinge — they bite into the framing behind the jamb and prevent sag.
- 4Close the door and check the reveal: 1/8" gap on the hinge side, 1/8" at the top, 1/8" on the strike side. The bottom gap depends on whether you have a threshold or finished floor — typically 1/2" for carpet, 1/4" for hard floor.
- 5Adjust as needed by adding shims behind a hinge (to push the door away from the jamb) or removing shims (to pull it closer).
Strike plate and latch
If the door is pre-machined, the strike will align with minimal fuss. If it doesn't, do not file the strike plate to make it fit — adjust the door's position in the frame first. Filing should be a last resort, and never more than 1/32".
Finishing touches
- Seal any field-cut edges immediately with matching sealer or primer. An unsealed wood edge will swell with humidity and stick within weeks.
- Adjust the closer (if installed) so the door closes fully but not violently — 5 to 8 seconds is the right speed for most commercial openings.
- Confirm latch engagement by closing the door slowly. The latch should drop fully into the strike with no resistance.
A properly hung solid-core door feels right immediately — smooth swing, consistent reveal, positive latch. If anything feels off, fix it before you sign off. It only gets harder to adjust once the punchlist starts.
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