Have a reputable sliding door contractor remove the door if it has not been damaged build a new frame and reinstall the door.
Sliding door leaking water at bottom.
Got a water leak around or below a upvc window or door.
Here is the solution to fix it relatively easily and permanently.
Spray the door and look for the leak location.
Some areas like your roof are obvious locations.
Check to see which door moves and which one is the stationary.
If you cannot re create the leak problem inspect the interior of the door for stains or rust.
I m attaching 2 pics.
Test the door for the location of the leak.
One potential problem area you can.
If a frame is crooked water can leak into the gaps between door and frame.
Second one shows the unmoving side of the door and the track where the moving part slides into when opened.
Moisture could be.
Got a water leak around or below a upvc window or door.
I plan to seal between the bottom aluminum threshold and the concrete curb and caulk the gap between the side trim and my brick.
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.
If you have a problem with water leaking it will usually be on the bottom track threshold of the non stationary door.
Water leakage is a common problem with sliding door thresholds.
There are many places where water can leak into your home.
Sometimes water intrusion is severe staining carpets and causing dryrot at the subfloor baseboards and sometimes even the wall.
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.
Water collects on both sides of the track where the sliding part of the door sits and where it slides.
However in some instances the top corner of the door is the true culprit.
First one shows the screen track and the track where the sliding half of the door sits when it s closed.
How to stop water leaks under a door frame.
When a door leaks the most common suspect is the bottom corner of the unit.