Rain dripping in cap window

When I have the tailgate window on my cap open in the rain the water pools up on the top seam of the window and drips in on either side - has one solved this problem? It means that the end of my camp mattress gets wet - any brilliant ideas.

 

Perhaps you could get something like this and put it right above the window and then go out to the sides.

 

Add a roof rack and an awning. It doesn't have to be an expensive awning although they're much nicer. A cheap Harbor Freight tarp, a couple of tent poles and a set of stakes will work but it's not going to win you any "overlander" points.

On my last Tacoma I was trying to help stop the water running down the glass, into the hinge and onto my junk so I glued a strip of rubber over the hinge (aluminum framed window). As you've noted, it just runs to the sides and since the window is narrower at the top, it still runs onto your stuff.

 

I have a 4x6’ awning that goes over my tailgate. It definitely helps

 

I have a Slumbejack Roadhouse tarp...covers the rear of the cap and extends out about well beyond 12ft from the rear of the truck.

 

Side note, if you don't have it in your budget (or don't want) a roof rack, some of those suction cup hooks will stick to the fiberglass shell and you can hook a tarp to them. They won't hold if it gets windy but it'll work for decent weather. Use some paracord/sting to tie the sides down to the wheels or whatever; bungee cords are dangerous.

 

Thanks for all of the responses - people seem to have come to the same conclusion that I have - will try some of those ideas