If I open my camper when it’s raining, the hinge channels water inside, soaking the foot of my bunk. I used Gorilla Tape and shipping envelopes to make a gutter on the inside, under the hinge, with little rain spouts directing the flow from the hinge to the outside edge of the door frame. The system needs a little tweaking as the door is opened, to ensure the rain spouts are pointing outside, before fully opening the door. This isn't fancy, but it solves a big problem with very little effort and expense.
Step 1: Line the Hinge With a Piece of Tape to Prevent Drips Through the Hinge
Measure the length of the hinge and roll out a strip of wide Gorilla Tape that length. Roll out an equal length of one-inch wide gorilla tape, and attach it carefully down the center of the sticky side of the wider strip of tape. Note, I have straps that limit the distance the door can open. This made it just wide enough to attach the strip of tape to both the inside edge of the door frame and the inside edge of the door (stretching across the hinge). If your camper door opens wider, just use an extra piece of tape to extend the width of the tape.
Attach the sticky side of one edge of the tape to the inside edge of the door frame. Use care to avoid getting kinks in the tape. When the tape is secure on the inside, with the door fully open, fold the tape toward the door and attach securely to the inside edge of the door. The hinge should be fully covered for the entire length, and the door should open and close freely.
Step 2: Make and Install the Rain Spouts.
I used two pieces of those blue and white padded shipping envelopes, cutting them at a fairly steep angle along the bottom fold. It may be beneficial to make the inside edge of the shipping bag triangle a bit wider to provide better coverage on the inside edge. You should have a triangle-shaped pocket, open on the long leg. By folding the short leg of the triangle partly inward, origami-style, you have an open scoop shape that should be wide enough to cover the hinge at the base of the scoop, and long enough to extend horizontally from behind the point where water pours in, coming to a point just outside the door opening. Attach the scoop to the inside of the door frame with Gorilla Tape, and attach the outer edge of the scoop to the upper edge of the door with another piece of tape, being sure the scoop slopes down slightly toward to end of the opening.
As the door swings downward, the scoop closes up slightly, and if the attachment is correct, as the scoop closes, it will drop down out of the way of the door frame. Experiment with the configuration until it looks like it will open and close without having to tweak things too much. I open the door part way, adjust the spouts so they are pointing outside, then open the door the rest of the way. Test with water, but don’t overdo it, a natural amount of flow should just make it to the narrow gutter-slot at the edge of the door frame and not trickle inside the camper.
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