Lowes installed my doors. What a cluster of catastrophes, It started with their crew coming out to measure. Then they came back with the windows and doors that THEY measured and the doors were so much smaller than the openings that they looked ridiculous. The doors were Pella wood sliders, very nice, but too small for the openings. I begged them to make the doors bigger, not smaller, but they said they could not. Then they could not find trim to fit the doors, so they left the last trim they bought in my yard to be rained on. As they were preparing to leave, I asked what they were doing with the trim and they told me I had purchased it and I could do whatever I wanted. This was their 6th try at installing said trim, so they never came back. I called and went to the store in Simpsonville, SC every day for weeks. I contacted the CEO of Lowes (not the current one) and he told me Blaine (the fellow in charge of my special order at the store) told them that I had ordered smaller doors to save money! first of all, I begged to make the doors bigger and the larger doors were less money because they were standard size. Now fast forward a few years and the largest set of doors will not even open at all! I had Pella out to my home and they said the doors were installed wrong from the beginning and that they need to take the whole thing out and reinstall. When the doors were first completed I was told that they only needed to be adjusted and I was doing it wrong. Can I sue lowes? Really angry!

Aside from the fact that your rough opening may be manipulated to accommodate a barn door, does the overall style of your home support this door style? Since the show Fixer Upper, I feel like there is a barn door epidemic that really does not relate well to most homes and looks strange and out of place. Aside from the function question, I think the style question also needs to be raised for your space in order to ensure your home remains cohesive as well as functional.

Need to see a picture of the house whats on top of the window and the door. Most likely there are 2 separate headers one for the door and one for the window so you would have to replace them with one which will span the entire opening. If they threw one header for both being them that close, will make things much easier, if not, it's not a big deal, experienced carpenter can do the whole job in one day with the new door installed and do any patchwork and trim work the the next day.

You need a sill for the door like this so no issue if you install the tile first make sure the header is the right height to accept the door and also the rough opening space .