Water is leaking in periodic drops at the bottom part of the trim which faces the ground above the door.
Sliding glass door leaking into basement.
One potential problem area you can overlook is underneath an exterior door.
Test the door for the location of the leak.
Gravity pulls the water over each shingle piece of siding or feather and the water never can get into the core of the building or bird.
I ve checked them and they drain properly.
The door is a retrofit from a previous owner.
Have a reputable sliding door contractor remove the door if it has not been damaged build a new frame and reinstall the door.
If you cannot re create the leak problem inspect the interior of the door for stains or rust.
Fill any cracks around the door with silicone caulking or concrete repair filler.
First time having a house with a sliding glass door and i m getting water inside.
I do not know who installed it.
If a frame is crooked water can leak into the gaps between door and frame.
See what we did to repair the situation.
Spray the door and look for the leak location.
Look around your walk out basement door to identify where the water is entering.
The best way to stop the leaks is to prevent them from occurring in the first place.
A sliding glass door is no better than the frame into which it is placed.
Aim a garden water hose with a sprayer set on mist or low at the outside of the sliding door.
The track where the screen sits has weep holes.
It looks like the previous owners had the same problem because there is some damage to the floor there.
1 leakage from poor failed caulk and or flashing over or around the door leaking down to the bottom of the door and then out onto the floor 2 poor seals on the door itself.