Here is the solution to fix it relatively easily and permanently.
Water leaking from sliding door frame.
Got a water leak around or below a upvc window or door.
Cover the bottom of the side jamb with the tape.
If your door was damaged during installation contact the manufacturer to see if a warranty applies.
Got a water leak around or below a upvc window or door.
Place the end of a strip of adhesive backed aluminum tape on one of the side jambs in the doorway 3 inches above the.
Water collects on both sides of the track where the sliding part of the door sits and where it slides.
Test the door for the location of the leak.
I m attaching 2 pics.
To slide the heavy doors along the metal frames the doors use metal or plastic rollers.
How to stop water leaks under a door frame 1.
Spray the door and look for the leak location.
Water leakage is a common problem with sliding door thresholds.
Have a reputable sliding door contractor remove the door if it has not been damaged build a new frame and reinstall the door.
However in some instances the top corner of the door is the true culprit.
Take action quickly when you first notice water leaking into your home.
Aim a garden water hose with a sprayer set on mist or low at the outside of the sliding door.
Second one shows the unmoving side of the door and the track where the moving part slides into when opened.
If you have a problem with water leaking it will usually be on the bottom track threshold of the non stationary door.
If you cannot re create the leak problem inspect the interior of the door for stains or rust.
Water can seep through even the smallest cracks.
Check to see which door moves and which one is the stationary.
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.
Damage to the door itself.
The ultimate goal is to create a series of overlapping layers of flashing material so that any water that gets behind the door trim from above the door or along the sides is captured and redirected.
Moisture could be seeping into your home from the top.
When a door leaks the most common suspect is the bottom corner of the unit.
If a frame is crooked water can leak into the gaps between door and frame.