Causes of door leaks there are many potential pathways for water to leak in through a door but the biggest opening is of course the doorway itself.
Water leaking from top of sliding door frame.
If you cannot re create the leak problem inspect the interior of the door for stains or rust.
Have a reputable sliding door contractor remove the door if it has not been damaged build a new frame and reinstall the door.
Some areas like your roof are obvious locations.
Moisture could be.
During irma my first floor s windows north facing about 8 on each side were leaking rainwater from the top of the window similar to the manner of leaking in the video by ada lam above.
It may seem obvious but a door left open or one that cannot be closed tightly because of wear and tear is a significant problem during a storm.
Aim a garden water hose with a sprayer set on mist or low at the outside of the sliding door.
How to stop water leaks under a door frame.
There are many places where water can leak into your home.
However in some instances the top corner of the door is the true culprit.
If a frame is crooked water can leak into the gaps between door and frame.
A sliding glass door is no better than the frame into which it is placed.
One potential problem area you can.
Common leak paths for doors.
Damage to the door itself.
Test the door for the location of the leak.
The gutters are clear and the patio is level.
Spray the door and look for the leak location.
I plan to seal.
Whether your door is sagging or bowed or just not making proper contact with the weatherstrip to seal out air and water the upper corners of your frame could be the problem.