Here's the scoop on Coachman's Azdel.
From the sound of the name, one would think it is a medical condition where one develops a valley on their butt. No wait, we already have one ,so it must be something else.
Coachmen RV - Manufacturer of Travel Trailers - Fifth Wheels - Tent Campers - Motorhomes
P.S. They tell you how awful it is to have wood in your roof or wall. If you look a bit lower, they brag about two layers of luan in the floor.
I guessing the plan is to use the Azdell to safely channel the water to the floor where it can rot in peace.