This means, over time water WILL seep down to your sub-floor/ frame causing it to rot.
|Rotting Shower Floor|
Aqua Shield Waterproofing Membrane. This is an easy to use fibrous material that can be purchased by-the-roll or by-the-square-foot and will create a water PROOF environment. For only $1.59 per square foot, this product is inexpensive enough to allow you to Aqua Shield your entire tiled-in shower. It is applied with a thin layer of thin-set to your backer-board or shower pan and designed to allow you to apply your tile right to it with the very same thin-set. In addition, this innovative vapor barrier is mold-resistant and won't break down from strong chemicals. Best of all, there is no cure time on this product like you will find with liquid waterproofing membranes.
What you can expect:
-Natural vapor barrier
-Flexible/ Cut fabric to desired length
-No cure time
-Resistant to chemical breakdown
-Turn your shower into a water "PROOF" environment