Originally Posted by Will Ackerman
I received two new soil stack covers, (roof jack) today from Inland RV ,and i can't figure out how to install them. The angles are different then the old one.The soil pipe will not correctly line up with top of (square hole) of new cover. Do i fill up the cavity with calk? Do i extend soil stack and rase roof jack to compensate for wrong angle?
The old plastic cover has a 5"x5" base more or less.The new one measures 4.5x4.5, i have some rivet holes to fill in . What would you recommend?
Although I'm told those covers are the only thing Airstream uses now, I don't care much for them. To me, the old plastic design should have been re-made with better material. They were smaller, lighter, less obtrusive, and a better design.
Now on to your
To start with, I believe the only thing that should be between the cover & the roof is the gasket, screen, and Vulkem i.e. no shimming for wrong angle. The proper orientation of the cover is where the drain holes will drain. On mine, the stack was completely hidden by the cover. If it had not been, I would have trimmed it.
When I had to replace my hopelessly busted plastic stack cover with one of the new ones, I removed the old one & used mineral spirits to clean all the old tar off. The new cover was then fitted to see if any of the existing rivet holes were reusable (don't remember if any were). The unusable rivet holes that were covered by the new cover were then then filled with Vulkem-dipped pop rivets. I then Vulkemed the gasket area, and gap between the stack & roof. The screen was then fitted, then the gasket, then the cover. The cover was then fastened with Vulkem-dipped Olympic rivets. I also Vulkemed around the cover after trimming the gasket.
Hope this helps,