I am Michael Gosart, President of Noble Fiberglass, LLC.
At Noble Fiberglass, we specialize in waterproofing custom shower pans in order to ensure a water-tight seal.
Our procedure is a two-stage process: First, we apply a pre-float with mortar pitching it to the drain. The next step is installing the fiberglass. After the fiberglass cures, a water test is done.
Upon inspection, the shower is ready for tile!