Speaking of rain, is this tonneau cover waterproof?
No tonneau cover manufacturer, that we’re aware of, claims to have a tonneau cover that is waterproof. We claim the tonneau cover is weather-tight. Meaning: that if it rains or snows, water won’t leak into your truck bed if it is installed correctly. We use a rubber seal on the tonneau cover that seals out the elements and is attached to the underside of the tonneau cover. (Please note that most truck beds have holes in the bottom of the truck bed itself as well as openings around the tailgate.
