Measuring For An Exterior Door
Measure the height from inside the door frame from the floor to the top do this once on the left side and once on the right side.
Measuring for an exterior door. Compare these measurements with those of a prehung door that has standard two-inch-wide brick molding trim. Use the smallest figure as your measurement. This measurement between the brick or siding on the exterior of the home and is typically 4 wider and 2¾ taller than the nominal size of the door.
This is sometimes called the pz. This will allow us to determine 12 shim space around the new unit frame and the rough opening. Commercial doors are usually 1 34 inches.
They walk you through two situations. Example is 40 x 82-34. Round these measurements up to full inches in order to more easily find the replacement door size.
Just to be safe measure the area where your door will go too. Run the tape measure along the edge of the door and record the measurement of the thickness. Youll want to measure the width of the door at the center running your tape measure from siding to siding stucco to stucco brick to brick whatever material outlines the sides of your sliding door.
Measure from the floor to the bottom of the header and record the measurement for each door. Measure the current door thickness. For example if the door measures 35 ¾ inches wide and 79 ½ inches tall youll want to order a 36-inch by 80-inch door.
Wide and 79-12 in. Therefore two 36-inch by 80-inch doors equal one 60-inch by 80-inch door. Tall youll order a 36 in.