Those who are installing their own garage door systems may think that using nails is a good idea. But experts advise that nails should never be used. Instead, lag screws are suggested. This type of fastener will allow the track hangars of your garage door to be bolted into place.
The reason why lag screws are recommended is because they are more reliable than nails. A garage door can generate much force when opening and closing, force which nails may not be able to handle over a long period of time. As well, a garage door fasted with nails may incur expensive damage in future should they fail.