The gutters are clear and the patio is level.
Patio door frame leaking.
Some areas like your roof are obvious locations.
There are many places where water can leak into your home.
Spray the door and look for the leak location.
6 rain hitting threshold and running down door face is splashing seeping under door on top of the threshold.
Test the door for the location of the leak.
Although leaks are extremely common in these areas and sometimes allow rain water air and light into your home a sealed crucial corner won t fix a leak issue in other areas of the door.
I plan to seal.
If you cannot re create the leak problem inspect the interior of the door for stains or rust.
Aim a garden water hose with a sprayer set on mist or low at the outside of the sliding door.
One potential problem area you can.
Simply remove the corner pad s adhesive backing and stick the small square pad to the insides of your door frame at the crucial corners.
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.
How to get rid of water in your patio sliding door wall.
Solution is a tight bottom sweep doorseal and a rain splashguard or dripcap on the bottom outer face of door like the following link the type i use unless a fancy appearing one is desired easy to diy on most doors.
I ve got a sliding patio door on the back of my home there s a moisture problem directly under the door in the basement.