Hi Alex, I have just re-done all the windows
in my 13 ' Trillium
. If your windows
are the jalousie type they should just pull out once "all" the screws are out. It is easy to miss one. The old butyl is likely stuck to both surfaces. The ensolite is glued to 3/4" plywood strips bevelled 45 deg away from the window opening. It is not glued to the window itself. You must be careful cutting the contact cement away from the ensolite. I used a dull edge putty knife as my wood was damp from leaks
. Once you see the strips you will have a better idea what I'm talking about. The newer trailers have a different style sliding window. I don't have any experience with those "yet". Re-sealing the windows
solved the leaks
in my Trillium
. Took about 2 days for all 4 windows. Buy some caulk tubes of no-more nails glue to fasten the esolite around the edges again.Get the water clean up type. Much easier ! Believe me ! Good luck with this. It will take some time but it's not that difficult. Don't skimp on the butyl sealer when you put the windows back in, "more is better" in this job !