An interior door upgrade can rejuvenate any space, especially when it brings in natural light, as does this Masonite Door with Privacy Glass. It’s not hard to install an interior slab door (as opposed to a pre-hung door). Follow our step-by-step tutorial and learn how to give any room a whole new look.
Install an Interior Slab Door
Materials and Tools
- Masonite 32-in. x 80-in. Sandblast Full Lite Solid Core Primed MDF Interior Door Slab with Privacy Glass
- Schlage Camelot Collection Bright Brass Georgian Keyed Entry Knob
- Utility knife
- Measuring tape
- Cordless drill
- Circular saw
- 5-in. Orbital sander
- Slotted & Philips-head screwdrivers
- Safety glasses
- Wood chisel set
- Everbilt Hinges Bright Brass Square Corner Security Hinges
- Door installation kit
- 3¼-in. Corded planer
- Work gloves
- 8-in. Wood shims
Here is a before and after shot of the room where we’re adding the new door. As you can see, this one simple DIY can make a huge difference.
STEP 1: Measure Your Old Door
Measure for the new door slab by checking the old door’s width in three places — across the top, middle and bottom of the door.
Jot down the widest dimension.
Next, measure the door’s height and thickness.
STEP 2: Remove the Door Hardware
STEP 3: Remove Your Old Door
To remove the old door, start by backing the screws out of each hinge on the door slab with a screwdriver or drilling and pulling it away from the door frame.
STEP 4: Dry Fit the New Door
Next, dry fit the new interior slab door in the opening, using shims to hold it in place if needed. If the new door doesn’t fit, the old door can be used as a template to indicate where the new door slab should be trimmed. Simply place the new door on a flat work surface, then place the old door on top of it, making sure to align both doors in the same direction (right side up, opening to same direction, etc.). Mark the bottom of the old door on the new door with a pencil.
STEP 5 : Trim the New Door
Sand any rough edges as needed with an orbital sander.
STEP 6: Mark for the Hinges and Door Knob
Again, using the old door as a template, with a pencil, mark on the new door where the hinges and door knob will be located.
STEP 7: Score and Notch the Hinge Perimeters
Next using the chisel, gradually skim off the notches.
STEP 8: Attach New Hinges to Door
Once notching is complete, attach the new hinges to the new door.
STEP 9: Attach the Lockset
Secure the door lockset kit onto the door using the provided screws, then using the hole saw bit, drill into one side, then the other.
Next, drill into the side edge of the door to create a hole for the latch.
STEP 10: Install the Latch
While the door is lying flat, install the latch portion of the new knob by tracing around it, then scoring with a utility knife and chiseling it out using the same method from Step 7, so that the latch lays flush against the door edge.
STEP 11: Attach the Hinges to the Door Frame
Once the latch is in place, move the new door to its location, add shims to adjust the door’s height and attach the other side of all hinges to the door frame.
STEP 12: Check the Fit
Hang the door and check the fit. If adjustments are needed, remove the door and sand or trim the door with a planer, as needed, then reinstall the door. If the fit is good, leave the door in place, and move on to finishing the lockset installation.
STEP 13: Install the Lockset
Install the lockset using a Philips screwdriver. Follow the instructions that came with your particular lockset.
STEP 14: Install the Latch Plate
Install the latch plate into the door frame by lining it up with the latch from the door knob, then scoring/chiseling as we did in Step 10 with the hinges.
STEP 15: Paint the Door If Needed
If your door features glass, be sure to leave the protective plastic on until you’ve finished painting your door.
Allow the paint to dry completely, and you’re done!