Our new window got leak tested last month when we had the first heavy rain since we went south in late November. Remember I only replaced the left side window with the NOS unit, the rear and right side are
Scamp windows. Anyway, no
leaks at those three, and a very small drip at the front window that I haven't done anything with yet. The problem with water
leaks is the water can travel before it shows up and that can make it hard to find. On our roof seam leak, I had a drip through the carpet right in the center and to the rear of the roof vent. Took down the carpet. Looking inside while it was raining the water appeared at the edge of that
fiberglass "plate" roof reinforcement that is at the vent opening. No hole or crack could be seen. No leak at
solar panel wire or mounting screws like I suspected. Had to remove the solar panel by loosening the screws on one mounting rail and forcing the panel out, then put the rail back. Now I could see a small hole at the seam on the outside, so I fiberglassed over it and the hole for the panel wire.
Leaks on this trailer have drove me nuts, I've had leaks at the marker
lights, stove vent, lower door hinge, and a stone chip in the front about 3" up on the body, and of course the windows, but all are fixed now, just have to do the front window.