Years ago I replaced every window in my travel trailer. The windows were not broken but the cloth like material that the window traveled in was destroyed from years of poor maintenance by a prior owner. Anyway, I looked at the job an said, there must be a glasser that can do this much better that I. I removed every window an took them to a local auto glass facility here in El Cajon, Ca. They did all of them for $25 a piece. When finished I picked them up and installed them with the same process that you intend to use. They worked like new and I had the coverage that if they leaked I could always go back to the auto glass facility and they would repair at little to no cost. Hope this helps a little.