For those curios about how and possibly what to use to seal their windshield, I just had to seal mine before the rains start falling here in the NW. I got my windshield replaced a few years ago and the installer claimed you "don't need sealer if you install it correctly." Well, apparently he didn't install it correctly because when it rains I can watch water get under the gasket/glass then pool and drip on the other side... I used butyl product called DekaSeal that is sold on Ebay, awesome stuff so far and would definitely use it again. Would also recommend a quality caulking gun, taping the tube to the gun, or potentially one of those fancy electric caulking guns.