I notice from photos on the internet that on the 1966 model 18 Silver Streak they changed the back window design by locating it lower on the body, well below the panel joints. Good for Silver Streak that they corrected their design flaw. Not really helping me any...
It is less than ideal to try sealing windows in 30 degree weather but I wanted to get a handle on the leak before fixing the floor. I pulled the window and resealed it using butyl tape and gutter seal.
It still leaked...
Being that one of my mottos is: "We do it right, because we do it twice", I pulled the window out a second time. This time I doubled up on the butyl tape to ensure there was enough tape thickness to seal the roof seams to window joint.
Still had a tiny weep on very rainy days!
I decided to put a drip brow above the window to help deflect some of the water flow. All the existing drip brows I could find, whether new or vintage, did not fit the style of the trailer. Too round, not anodized and oh so flimsy. So I had a custom anodized aluminum drip brow made by Schmeer Sheet Metal Works. They area a local fabricator that was recommended to me: http://www.schmeersheetmetal.com. They did a great job. I feel the drip brow matches the style of the trailer very well:
The window still leaked...just a tiny bit, a drop or two.
Weeks later as the weather warmed and dried slightly I used Captain Tolleys Crack Cure to try to seal the roof seams.
Still leaked...
Finally in May when we had very hot weather (almost 100 degrees) I think the sealants finally warmed enough to seal properly because it is not leaking anymore!