I'm looking into thermally insulating the bottom of my Garage door (I live on Long Island NY, so the winters can get a bit cold), and I noticed that there are gaps in the sides of the garage door bottom.
What are these intentional gaps in the bottom of the rubber on the garage door?
Are they there intentionally?
Do they pose a problem for keeping the garage warm during the winter since air can go through them?
How would I get rid of them?
You can see it in the pictures that I shot: