Installing garage door weather stripping also known as astragal fills the gap around the edge of your garage door.
How to install weather stripping around garage door.
You can usually find the types of door weather stripping shown here at well stocked hardware stores and home centers.
Getting the top piece cut to the proper length is the greatest challenge in this easy to do project.
Use a door sweep to seal the bottom of the door.
This flexible weather seal limits air flow into the garage resulting in a more comfortable environment when your garage door is closed and helping keep dust and debris outside the garage.
How to install garage door weather stripping.