Is the shower curtain supposed to touch the floor?
No, your shower curtain is not supposed to touch the floor. The simple reason for this is it will help prevent the bottom of the curtain from collecting too much moisture and dirt. Therefore, leave at least two inches of space between the curtain hem and the bathroom floor.
Where should a shower curtain rod be placed?
For best fit, shower curtain should be 6" - 12" wider than shower rod. Mount rod approximately 3" inside the point a straight rod is normally mounted. The midpoint of the rod should extend several inches past the outside rim of the tub. Depending upon tub model, mount rod between 6" and 8" from center line of the tub.
How are shower curtains supposed to hang?
The rule of thumb is to put the shower curtain rod three to five inches higher than the shower curtain's length. At the least, you want the curtain to hang at least six inches past the rim of the tub. Hanging the rod higher has the effect of making the bathroom ceiling appear taller.