If you have a 2010 or 2011 Hi-Lo you may want to keep an eye on the seal material on the front window. These Lexan windows have a lot of flex since they are not made of rigid material, so the sealant doesn't stick well to it. Our window started pulling up and the sealing material cracked away from the Lexan. Water was seeping in around it and running down inside. There are only four small bolts and the sealant material behind and outside that holds it in place. The factory did not do a very exemplary job of sealing around the outside.
I decided to add a couple more screws on either side at the corners in order to keep the Lexan from lifting. I used 1/8" x 1/2" stainless steel metal screws. I made pilot holes through the Lexan slightly larger than the screw diameter to allow for thermal movement so as to not put stress on the Lexan, and did not tighten down the screws. The backup framing is very thin so that's why such short screws. I then applied Lexel Super-Elastic Sealant after masking around both the window and frame. After a thorough cleaning and an alcohol wipe, it took about two tubes of sealant and a soapy finger to smooth out the very wide strip I had to lay in to bridge the gap between the Lexan and the window opening. Lexel is very gooey but it seems to stick like everything. Lexel is available at hardware stores.
Time will tell how well it works.
I decided to add a couple more screws on either side at the corners in order to keep the Lexan from lifting. I used 1/8" x 1/2" stainless steel metal screws. I made pilot holes through the Lexan slightly larger than the screw diameter to allow for thermal movement so as to not put stress on the Lexan, and did not tighten down the screws. The backup framing is very thin so that's why such short screws. I then applied Lexel Super-Elastic Sealant after masking around both the window and frame. After a thorough cleaning and an alcohol wipe, it took about two tubes of sealant and a soapy finger to smooth out the very wide strip I had to lay in to bridge the gap between the Lexan and the window opening. Lexel is very gooey but it seems to stick like everything. Lexel is available at hardware stores.
Time will tell how well it works.
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