If you want to convert your back door or your single door that opens onto your patio into French patio doors, it can be done. It is a little more complicated than converting from double-hung doors to a single door because you have to cut more space out of the wall, but if you are very careful, you can manage this as a DIY project. Here is how to prepare for this type of project.
First, Measure the Wall Space Where the Single Door Currently Is
Since a lot of the wall will need to be cut away to install the French doors, you need to know how much wall space you have with which to work. French doors can be massive, or petite, but if you buy the wrong size and cannot get them to fit the wall space you have, you will need to hire a contractor to fix this messy problem. Once you have the wall space measured, you will need to subtract several inches or more from the top of the wall so that the height of your new doors does not consume the height of the wall. (This is for both aesthetic and structural reasons.)
Next, Shop for the Door Styles You Would Like to Install
Double-hung French doors are not simply one or two different styles. The glass and frames in these doors varies as widely as the type of handle hardware you can install on the doors themselves. If you find a style or two that you like, be sure to check the measurements against the measurements you took of your wall.
Ideally, you will still want some "white space" surrounding the doors, since many of the stud boards in a wall support the second floor or roof of your home and you do not want to cut all of the stud boards out of the wall just to install the doors and the frame. If the doors do not leave enough space in the wall, you will need to keep looking until you find a set that does. The other possibility is that you pay for a custom set of French doors to be built and shipped to you.
Lastly, Get the Wall Ready to Install the Doors
You will need to use a reciprocating saw or circular saw to cut out the opening for your new doors. You will also need to remove the single door, in its entirety, from the wall. As you go, you may also want to use some very thick, heavy duty boards to support the roof or second story of your home when these parts of your home rest heavily on the wall you are cutting. The boards are placed vertically in key spots to support everything above until the frame of the doors is ready for installation. Then you can install the frame of the French doors and finally the French doors themselves, which should easily be hung from the hinge hardware screwed into the frame.
To learn more, contact a company like Fas Windows and Doors.