How To Measure Interior Door For Prehung

This guarantees that the interior trim will fit flush to the wall without adding jamb extensions.

How to measure interior door for prehung. Measure from the backside of the interior trim to the backside of the exterior trim figure a. Proper measurements are critical to getting the right door the first time. If you must it is always better to round down than round up.

Standard widths for interior doors are 24 28 30 32 and 36 inches while the height must be a minimum of 80 inches. First measure the door s rough opening width in three places. The measurement should run from the door stud found on one side of the doorway to the opposite door stud on the other side of the opening.

Step 1 remove molding. Specify this jamb width when you order your new prehung door. Measure the height of the door right in the middle.

A prehung door can be either an interior door or an exterior door. Measure the width of the door in 3 locations. Measure the height of the rough opening from the floor or rough sill to the bottom face of the header.

Slide the end of the painter s pry bar between the door casing. Measure the width of the rough opening from the inside faces of the side studs. Step 2 prepare the rough opening.

How to measure for a new prehung interior door everything you need to know to take accurate measurements in your home before ordering a new prehung interior door. Cut around the outside edge of the interior door casing with a utility knife. Failure to do this will result in having a prehung door that is too big for the doorway.