After your final film trim has been completed, you will need to once again squeegee the window. The way you squeegee out the water can have an effect on the cleanliness of your installation. If you squeegee water straight into the gasket, the water can flush out dirt making for a less than professional installation.
Once you have finished making your final trim, follow these squeegeeing steps:

Step 3 squeegee out towards opposite edge |

Remember to use
overlapping stroke |
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Repeat the entire process at least twice (3 times for sputterred films and 4 times for security films), increasing squeegee pressure with each cycle.