The most likely cause is that the floor is not perfectly level.
Sliding door gap at top.
Simply loosen those screws without taking them all the way out and extend the length of the door by sliding the slots along the screw.
An interior doors to one of our bedroom has a gap between the door and the jamb.
Inspect the doorjamb and door frame for worn or damaged caulk.
You should find the top and bottom rails of the door are attached with two screws that are located in slots about one inch long.
If worn or damaged scrape away with a putty knife.
This can be easily checked with a level placed on the jamb or hinges to check if they are correct.
When you have an uneven gap across the top of door it can be caused by two common problems.
Check the doorjamb and the frame surrounding the door.
Door is uneven at the top.
The purpose of the barn sliding doors is to be able to close the space at the top of the stairs to provide some privacy and sound insulation kids party downstairs grown ups upstairs for example it doesn t have to be anywhere near perfect sound insulation while also being able to leave it open for easy access and a more open feel upstairs.
The door seals fine at the top but there is a diagonal line that starts at the top lock side and goes all the way down and basically you can see through inside.
Wipe the area with a rag and apply new caulk with a caulking gun.
The house is old 116 y o the door is perfectly square but the jamb isn t it is 1 75 off square.
The cause of the gap could derive from the door s incorrect installation in the frame or it could be due to the door sagging over time.
If a door has an open gap above its top edge it will allow air drafts inside and allow interior air to escape.
Upgraded door draft stopper for large gap widened door sweep seal gap up to 1 2 5 for interior exterior and garage doors keeping draft dust noise unwanted light and pests out 3 w x 37 l black 4 5 out of 5 stars 279.
The first is the door hinge side is out of plumb.
Sliding closet doors operate on rollers that are positioned in tracks at the top jamb and floor allowing the doors to bypass each other in the tracks.
How to fix a gap in an outside door.
Almost all sliding patio doors are adjustable when it comes to height.