If the old door was trimmed at the bottom and you were happy with the gap at the floor cut the new door to match.
How to install hinges on a new interior door.
Mount the hinges on the new door and hang the door.
Open the door and stand with your back to the hinges.
If you don t need any further adjustments remove the door again then finish it to match the rest of the woodwork and rehang it.
Working from the hinge side or rear of the door take out the door knob and existing lock set.
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.
If you have a third hinge typically used for heavy doors it will be placed directly in the middle of the other two hinges.
Close old door and measure up 12 inches from threshold and mark the door.
Some blank doors have a specific swing direction.
Place the existing door on top of the new door.
Most doors require a minimum of two hinges.
Pull hinge pins and take down old door.
Set the door on its side with the inside edge of the door where the hinges will go facing up against a stable surface such as a work bench.
Trim door to correct size.
Assuming you re installing a new door you ll need to find the precise location on the door frame.
Mark the hinge placement use a speed square to mark the top and bottom of each hinge on the new door.
Lay old door on top of new door.
3 place the hinge on the door as if it were already.
Keep tops and hinge edges flush.
How to hang a door in an existing jamb.
Place your hinges in the correct location.
Remove knob and lock set.
Remove door from hinge knuckles.
If you re installing a pre hung door make sure you get the correct swing determined by the placement of the hinges and doorknob.
Measure this distance and mark the location on the frame and then do the same on the door that you re hanging.
Align the top edge of both doors and use the existing door as a guide for marking the hinge placement on the new door.
If the knob is to the right select a right handed door.
Unscrew the lockset from old door.
One hinge is located 7 inches from the top of the door frame and the other hinge is located 11 inches from the bottom of the door frame.