Properly Slope the Curb

The slope of the curb in a shower system is by far the most critical area when trying to contain water.  Water will sheet down glass panels and doors. When the water hits the curb, the water must quickly flow in the direction of the shower to make way for additional water continuously flowing down the glass. This is true of glass in channel, clips, or track. 

Water flowing out of a shower is obviously bad,  however, water that sits in flat areas can prove to be an equal or even worse problem since water damage can happen slowly over time. Water in flat areas can both flow in the wrong direction as it builds up, or it may sit for a period of time before it evaporates. This may allow the water to soak into porous grout and eventually wick into shower materials such as surrounding wood and drywall.