Shower Door Bottom Sweep

I have the silly fools of all redo my bathroom right now. Old was rotten and had mold in some places if I had any tearing down to the studs and basically built a new bathroom from scratch. Despite his bluster about 20 years to make this work, there were a number of things he got wrong. Some questions that I let go because it's too difficult to fix without tearing up again (too close to the toilet wall tiles misaligned) and I had some correct (his line of grout was much too low, it does not fully cover the hot water pipes which serves as a baseboard heater, loose floor tiles in the shower, did not seal after grouting). Anyway, his latest problem is my frame aluminum shower. If you take a shower that my girlfriend did this morning, water leaks and pools on the ground. The casing is aluminum inside the aluminum cons, but it is not waterproof. Looking online for 5 minutes, I learned about seals and scans (something that is lacking in its 20 years of experience), but my question is, how do I request a scan? Or do I? The door opens outwards, which is correct, but to prevent it from swaying in the shower, there is a strip of aluminum that is part of the frame. I do not see how, if the sweep attaches to the bottom of the door, he can "jump" on the aluminum band around each time I shower and keep the water in. Does that make sense? In other words, say that the door is open, I am attaching a scan, then I close the door ... scanning will be wedged between the door and the band, not the other side of the band by covering it with water from the shower. I do not understand how a scanning work? Is there something I can do? Thank you.

I am a little confused, but we did install new shower doors with sweeps and hunters of some sort. I do not really know how to explain it, but it works. The part that you want should have come with your door. He should be in the box. You install it on the door, prior to your door. Instructions come with it.