When you first installed your tonneau cover, there may have been either a storage can or a set of gutters integrated into the setup. These are what allow the drain tubes to do their job.

Gutter systems and French drains can be used separately or in combination, ... The idea is to channel ground water through the gravel, ... cover the bottom 2 inches with a 1/2-inch gravel.

Instead of a gutter at the edge of the roof, a French drain does essentially the same thing on the ground. It consists of a trench that slopes away from the house at a rate of at least 1 inch to ...

Q: I had a contractor install pop-up gutter drains. They were supposed to be dug 10 feet out. He only did this for one at the back of the house. The other three are only 4 to 5 feet out. I wasn't ...

When you first installed your tonneau cover, there may have been either a storage can or a set of gutters integrated into the setup. These are what allow the drain tubes to do their job.