If the measurements vary even slightly, you’ll need to adjust the door and/or the jamb so it is square before moving forward.
For each of the measurements, hold the tape measure so it’s parallel to the ground. You don’t need to find the exact center of the door frame. Eyeball it so the tape measure is roughly at center. It’s a good idea to repeat the measurements to ensure that they’re accurate.
For example, if the width of the door measures 32 ¼ inches and the height measures 80 ¼ inches, you should actually look for a door that’s 32 inches (81. 3 cm) wide and 80 inches (200 cm) in height.
There will be some variation in the height measurements as well. An 81 in (210 cm) door can usually fit in an opening that’s 80 inches (200 cm) to 81 inches (210 cm).
If your door frame needs painting, do it right after you remove the old screen door. It’s much easier to paint without the door in the way. If your old door had a latch, you’ll need to remove the latch mechanism as well. In most cases, the latch is held in place with screws, so use the power screwdriver to take it off.
If possible, have a friend or family member help you. It’s much easier to screw in the hinges if the door is held in place.
You may need to use tape to hold the z-bar in place. Pre-drilling the holes can prevent the wood from cracking.
