To install auto glass, the frame must be cleaned of all extraneous material including all old window adhesive. A scraper and auto paint reducer or something similar is the best way to remove the remaining window sealer. The window frame must be extremely clean in order to give a good adhesive seal. Once this is done make sure that the window supporting blocks are in place at the bottom of the window. These are small 1-inch rubber blocks used to support the window so that the total weight of the window is not supported strictly by the window-sealer bead.
If the window blocks were removed with the old window, new blocks should come with the new window sealer ribbon. If not, purchase new blocks since they are essential when installing a window. Without them the window will sag or slide down over time and create leaks. Once the blocks are installed make sure that all the molding clips are in place if the vehicle uses a molding around the window.
It is difficult in most cases to replace these when the window is installed, due to the window adhesive bead. Once this is all accomplished a windshield installation primer must be installed around the window frame. The primer creates a very sticky base for the window-sealer bead and promotes long-lasting adhesion. Once this is on, the window-seal bead should be installed as soon as possible to protect the primer from dust.
The window-sealer ribbon bead is very sticky. It comes in a roll covered with a tape in between to keep the sealer from adhering to itself. Use this tape to touch the sealer so your hands do not get stuck. It is really easy to ruin the window sealer if caution and patience are not exercised. Carefully unwind some of the seal. Start at the bottom corner of the window frame. Be careful to place the seal in the right spot because once the seal touches the primer it is done. It is not coming off in one piece. Do it right the first time.
Unravel small amounts at a time and make the seal as straight as possible. Use your thumb to push down lightly on the seal. Cut the remaining bead off and overlap a small amount of the sealer. Once this is done, slide your finger on top of the tape around the sealer bead to make sure it is in place.
To install the windshield it is advisable to use two people. The window is big and it is a little hard to judge exactly where the opposite end is located when lining it up. Remember that once the window touches the sealer bead it won't move or come loose. Once the window is laying on the sealer bead, lightly push down with the palm of your hand all the way around the windshield.
