To measure the size of a door first find the width by measuring from the left corner of the door to the right corner.
How to measure door size interior.
Then measure the height by running your tape measure along your door from the top corner to the bottom corner.
Take a second measurement from the left side of the door opening to the floor.
The measuring of interior doors is very straight forward the fitting of interior doors can also be easy but have a writing pad to hand if measuring several doors and try and measure each of the doors room by room from the hallway in a clockwise fashion it will be easier for you to remember which door goes where.
For a pre hung door measure the width and height of the slab the rough opening space between the studs with no door installed and the thickness of the jamb.
For a slab door measure the width height and thickness of the door.
Measure the width of the opening stud to stud in 3 places the top middle and bottom and record the smallest measurement.
Measure from the stud at the top of the frame to the floor near the right side of the door frame.
Make a note of the.
Double doors extra in width for t astragal.
Standard door sizes fit most existing edges but some seasoned houses will have moved causing twists and turns in the door frame.
Open the door and measure from the inside of one jamb to the inside of the opposite jamb this is the spot where the sides of the door would fit when closed.
Write the number down.
The rough opening is typically about 1 1 2 wider than the unit size and about a 1 taller.
Measure the door frame carefully for a perfect fit in most cases you can order the new door in the same size as the old one as the door can be trimmed to fit the 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.