Everyone has likely seen the unsightly blackening of caulk around this connection.
Weep holes shower door frame.
This is something that can be done in place but you need to be very cautious not to nick the edge of the glass in the process.
Actually this type of shower enclosure doesn t require holes in the frame in order for the water to weep.
Tubs do not have these weep hole details so not caulking over the grout on a tub tile wall connection is even more important.
The l shape of the bottom sill allows the water to run off back into the shower.
Yes those are what we call weep holes they are necessary as you guessed to allow the water to drain out of the frame and into the shower.
Locate the drain holes along the bottom inside edge of the frame and use a small screwdriver wire coat hanger or other similar device to clean the holes.
In a framed shower door if the leak is originating near the bottom of the door it is likely caused by clogged drain holes.
The best solution one that you have already cited is to drill holes at the bottom of the aluminum channel that will allow the water that gets into it to weep back out into the shower.
I would suggest spraying a bleach solution into the holes from time to time to try to inhibit the mold growth in the framework.
Open the shower doors and spray the aluminum frame thoroughly with the vinegar solution.
They are to let any water that splashes onto the door to run down the door and back into the tub.
Yes those are what we call weep holes they are necessary as you guessed to allow the water to drain out of the frame and into the shower.
I would suggest spraying a bleach solution into the holes from time to time to try to inhibit the mold growth in the framework.
It is also important to make sure the weep holes built into the shower base are left open as an escape route for trapped moisture.