How to install internal doors and hinges

What is involved in installing internal doors and hinges?

🪚 Installing Internal Doors and Hinges — Professional Trade Guide

Installing internal doors correctly is a core carpentry and joinery task that directly affects operation, appearance and long-term performance. The key outcomes are consistent margins, accurate hinge gains, proper latch alignment and smooth swing without bind or excessive clearance.

This guide covers setting out, trimming, hinge installation, hanging, clearances and final adjustment for standard internal hinged doors in Australian residential construction, suitable for both new builds and renovation work. Where relevant, align framing and door clearances with AS 1684 Residential Timber-Framed Construction and project-specific manufacturer requirements.

What skill level is required for internal door and hinge installation?

Intermediate — Estimated time: 1.5 to 3 hours per door

What tools are essential for installing internal doors and hinges?

What materials are needed for internal door and hinge installation?

Safety Requirements

Step-by-Step Guide

Step 1: Inspect the opening and confirm door schedule

1️⃣ Check Frame Condition and Door Handing

Confirm the opening matches the scheduled door size, handing, swing direction and hardware specification before cutting or machining anything. Check the jamb is fixed, placed correctly and reasonably plumb, straight and in wind.

Measure the opening width in at least three positions and the height at both jamb legs. Also check the head for level and the floor finish condition, especially on renovation work where one side may be high.

For standard internal work, aim for clean and even margins of approximately:

💡 If floor coverings are not yet installed, allow for the finished floor build-up before trimming the door bottom.

Step 2: Set out the door and calculate trims

2️⃣ Mark Cut Lines and Preserve Factory Edges

Place the door on padded trestles and identify the top, bottom, hinge stile and lock stile. Many manufactured doors have trimming limitations, particularly hollow core leaves with narrow solid lippings.

Check the manufacturer’s allowable trim margins before cutting. Typical flush doors may only allow limited trimming, often in the range of 3 mm to 10 mm per edge, unless specifically oversized.

Calculate the cut so the finished door sits centrally in the frame with even gaps. Where possible:

Mark all lines with a knife and square. Use masking tape over painted or veneered faces to reduce breakout.

💡 On renovation work, if the jamb is out of square, scribe the door to suit the opening rather than forcing equal trims that create poor margins.

Step 3: Trim the door to size

3️⃣ Cut, Plane and Seal Edges

Trim the door using a circular saw with guide or track saw for clean, straight cuts. Support the leaf fully to avoid breakout or sag during cutting.

If only minor adjustment is required, use a sharp block plane or electric planer. Plane in controlled passes and regularly recheck dimensions. Slightly ease the arrises after trimming to prevent paint chipping and improve swing clearance.

After cutting:

💡 Unsealed bottom edges are a common cause of moisture uptake and premature door failure, particularly in laundries and bathrooms.

Step 4: Set out hinge positions

4️⃣ Mark Hinge Locations Accurately

Standard practice for internal doors is generally:

Transfer hinge positions to both door edge and jamb accurately. Work from a single reference face and mark with a knife for clean shoulders.

For most standard residential internal doors, 3 hinges provide better long-term stability than 2, particularly for heavier leaves or high-use areas.

Ensure the hinge knuckle projects correctly so the door clears the jamb and stop without binding.

Step 5: Cut hinge gains

5️⃣ Router First, Chisel to Finish

Use a hinge jig and router for consistent depth and clean gains. Set the rebate depth to match the exact leaf thickness of the hinge so the hinge sits flush with the door edge and jamb face.

Square the corners with a sharp chisel if using a radius router cutter and square-corner butt hinges.

Key checks:

If chiselling by hand, knife the perimeter first, make shallow relief cuts, then pare back carefully to finished depth.

💡 A hinge that sits even 0.5 mm proud can throw margins out and cause latch-side bind.

Step 6: Fix hinges to the door leaf

6️⃣ Pilot, Centre and Screw Off Properly

Fit the hinges to the door first in most cases. Use a self-centring bit to ensure screws pull the hinge into the middle of the gain rather than drifting sideways.

Drill pilot holes to avoid splitting, especially in hardwood lippings or solid core leaves. Initially install one screw near each end of the hinge so final adjustments are easier if needed.

Check:

Where screws supplied with hardware are poor quality, replace them with better-grade matching screws to avoid head shear.

Step 7: Hang the door in the jamb

7️⃣ Pack, Support and Transfer Carefully

Stand the door in the opening using a door lifter, wedges or packers under the bottom edge. Set the bottom clearance first, then establish the head and side margins.

With the door supported in its final position:

Alternatively, on workshop-fit or controlled site conditions, hinges can be pre-set to door and jamb and the leaf dropped onto loose-pin hinges.

Check margins progressively as each hinge is fixed. Start with the top hinge, then bottom, then the middle hinge.

💡 If the latch margin tightens at the top and opens at the bottom, check for hinge depth error or jamb wind before trimming the lock stile unnecessarily.

Step 8: Test swing and adjust margins

8️⃣ Fine-Tune Before Lock Installation

Open and close the door through full swing and inspect the reveal lines. The door should move freely without striking the head, jamb or floor finish.

Adjust as required by:

Aim for a visually consistent gap and smooth action. On painted jobs, complete all adjustments before final finish coats where possible.

If the door self-opens or self-closes, the jamb may be out of plumb or the hinges may be in bind.

Step 9: Set out and install latch hardware

9️⃣ Bore Cleanly and Align the Strike

Mark latch height to project standard, commonly around 900 mm to 1050 mm above finished floor level unless noted otherwise.

Install the latch set using the manufacturer’s bore dimensions. Typical steps include:

Close the door carefully to mark the latch tongue position on the jamb stop. Rebate the strike so the plate sits flush and the latch engages positively without rattling or excessive preload.

💡 A latch that requires force to engage usually indicates poor strike alignment, not a faulty lockset.

Step 10: Final finishing and handover check

🔟 Complete Final QA

Fit any remaining hinge screws, tighten all hardware and perform a final operational check. Inspect:

Touch up any raw edges, minor bruising or filled areas. Remove pencil marks, labels and protective tape.

On production work, complete a consistent handover check for every door to avoid callback items.

Common Mistakes to Avoid

Pro Tips

Recommended Tools