My house is 17 years old and I am the original owner. The fiberglass shower stall in the 2nd floor master bath is obviously leaking, as the first floor ceiling directly below it has some water spots and was wet to the touch. I removed the drain screen and pulled out 17 years worth of hair. It was full of hair from the top of the drain to the bottom of the pipe. And it was tight and thick. Always wondered where my hair went! Could this have been the cause of the leak? The water spot on the ceiling below is now dry and was only about 2 inches in diameter. Thanks in advance. John