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Originally Posted by Long & Winding road

I thought about using the Eternalbond tape (like 3 inch wide) and stick it directly to the TPO roof starting at the AC drains to channel to each corner of the RV. Kinda like an X pattern.



So I would Fold tape in half in the middle (one inch) then have one inch sides stuck to the roof (hard to explain but it would be like a flat flap sticking up one inch from the roof). Then I would block off the front and rear cap doing the same thing (V shaped pattern but leaving about one inch spot on each corner for the water to drip down).



I have NOT done this yet.... just an idea.



While driving the water will go where it want to go but while parked and fairly level I would think it would control where it drips down at. Perhaps add a gutter at these four points on the 4 corners?



I will take pictures if I end up doing this idea.

I like your idea. Maybe to add a thought instead of the fold why not put 3/8 or 1/4 tubing under the tape

Either way I think you're on to something

Jerry