Measure the width, height, and depth of the existing door and frame to ensure the new door fits.
Remove the hinge pins and lift the old door off the hinges carefully.
Use a pry bar to remove the interior and exterior trim around the door frame.
Cut through any nails or screws securing the old frame and remove it completely.
Inspect and clean the rough opening, ensuring it is level and free of debris.
Place the new pre-hung door into the opening to check for fit and alignment.
Apply a generous bead of exterior caulk to the bottom sill area to prevent water intrusion.
Insert the new door into the opening and center it using wood shims on all sides.
Use a level to ensure the door is plumb and square before securing it with screws.
Drive screws through the frame into the studs, starting at the hinge side for stability.
Open and close the door to verify smooth operation and adjust shims as needed.
Fill any gaps between the frame and wall with insulation or backer rod.
Apply exterior caulk around the door frame to seal out air and moisture.
Reinstall or replace interior and exterior trim around the door.
Install the door handle, lockset, and any additional hardware per manufacturer instructions.
Touch up any exposed wood with paint or stain to match the door and trim.
Install or replace weatherstripping to improve energy efficiency.
Test the door again to ensure it latches securely and swings freely.
Clean up the work area and dispose of the old door and materials properly.
Allow caulk and paint to dry fully before exposing to weather.
