Originally Posted by courtney
...What would you have done differently?
They said, "When I replaced the fiberboard with new particle board."
I would have used marine grade plywood. If they do get another window leak the particle board will soak up the water like a sponge.
They said, "I removed the old sealant, and re caulked with 100% silicon. The more the better."
I don't think more is better. In fact none should be fine, assuming the window uses butyl tape or a custom gasket to seal the edges. And if the gap is as large as they say, I would use a different window or no window at all. My door window sits fairly flush to the door and I'm sure there is butyl under the frame which should be good for at least ten - fifteen years before its time to think about reinstalling the window. Even with no caulking. BTW, It's a fixed, non-opening window.
Now the roof fridge
vent does have a large gap, and a lot of caulking. I'm keeping an eye on it and if it fails I hope to create a flatter surface somehow for the fridge
vent since it is designed for a flat RV roof.