In standard poured shower pan construction there is normally a rubber layer between the bottom flat layer, and the upper sloped layer.
Today I came across the following "updated" method:
(credit: Mr. Money Mustache)
I am under the impression that redgaurd is used primarily to keep splashes and overflow from causing an issue, and not as a primary water repellant.
Is redgard, or any comparable product, able to hold up under this kind of abuse?