Do you need to get yourself a garage door weather sealant? You can install them on your own, if you're a fairly confident do-it-yourself-er. And it's a fantastic thing to have- these days, most garage doors come with them. They help keep cold air out in the winter and hot air out in the summer, which helps regulate the homeostatic temperature of your garage and therefore, your home. Without having to reach for the thermostat!
This is great for those who have to suffer through long, cold winters. (Hi, Alaska!) And it's great for anyone who likes to save money- the differential in energy used to heat the house is enough to significantly save on energy bills, especially when added up over the years.
You may especially be in need of some weather sealant if you have noticeable cracks beneath the edge of your garage door. So how to go about it?
You'll need some tools, first: a hammer, nails, measuring tape, a pencil, and some good scissors ought to do it. Most sealants come with directions on the package, so you'll want to follow whose to the letter. And really do take the painstaking time ot perfectly line up the sealant- if it's crooked, it's basically useless.