How to Measure Patio Doors

 

If you are installing a new patio door or replacing an old one, you need to know the patio door measurements. Typically, home improvement stores sell patio doors based on rough opening sizes the distance between studs header and subfloor.

Before you get started, here is a list of what you’ll need:

  • Measuring tape
  • Paper and pencil
With that, follow the simple steps below to accurately measure your patio doors!

Step #1:
  • Determine the rough opening of the patio doors by measuring horizontally from stud to stud.
  • If you already have a finished patio door and don’t have access to the studs, measure from inside the door frame, and add 1 1/2 to 2 inches for an accurate estimated rough opening size.
Step #2:
  • Measure the height of the opening by measuring from the bottom of the top frame (header) to the top of the subfloor.
Step #3:
  • Make four measurements two horizontal measurements on the top and bottom of the opening, and two vertical measurements on each side (this will tell you whether or not your patio doors are square).
  • Take the smaller of the horizontal and vertical numbers.
  • Write down the measurements on a piece of paper.

You’ve now successfully and accurately measured your patio doors!

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* Manufacturers will change product lines periodically and some styles of doors may no longer be available.