Hi Guys thanks for the info. And yes it has come loose. Rite at the top, a three foot length. Not just the caulk the adhesive also. I talked to Joel the former Hi-Lo plant manager. (Of course there is no warranty with Hi-Lo out of production). However, these are the folks that made the Hi-Lo. In my opinion still one of the best travel trailers so far. Joel said he still has the jig for the Lexan windshield on the 2010 and 2011. He will check on the current price for the Lexan sheet and get back to me. He told me how to do the replacement and/or bring it to his shop. If you have a Hi-Lo and need parts their web site is
Home - The Only Official HiLo Repair Shop & Parts. If you type it in and it does not get you there do a search for Hi-Lo trailer parts. You'll know your in the right place when you see on the site their new Midget trailers. Even with this problem on my 2011 Hi-Lo 2311H I think this is a good unit. I've had 2 pickup campers and other towable units. They did not even come close to what you get with the Hi-Lo. By the way, I still have my 1969 Tow-Low. Very similar design. No wood frame, Aluminum folded joint roof, etc. Never had a roof leak.