When we enclosed part of of our deck with a sunroom, my wife suggested we replace the sliding door with double French doors. They look much better, open or closed, and open to twice as large an opening. However, when left open, the swing takes up a lot of room, limiting furniture placement.
I still think it was a good change. But there are tradeoffs.
French Doors are the way to go if you are leaning more toward conserving energy. Dual Glazed French Doors with Low-E glass will save more on your energy bills. The large glass of a 1-lite is still prevalent and will let in as much light as a sliding glass door. By weatherstripping and adding a door shoe to french doors, you are ensuring a air tight seal. With sliding glass doors excess air flows through the rollers at the bottom.
There is no better. Both doors are made of equal quality.
Your decision will be made based on where the door is installed and which door you like. You may like the French door better even if the location has some compromises.
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