If there s a slight gap at the bottom of your garage door then a garage door threshold is a great option.
Seal garage door gap between panels.
Garage door panel weatherstripping.
Newer metal and fiberglass doors usually have interlocking edges to prevent air intrusion door panel weatherstripping is sold in rolls and is self adhesive.
The flexible vinyl strip has to cover the gap to lay flush on the door and its part with the screw holes should face the side wall.
Use your scissors and cut this size.
Install a garage door threshold.
A if the gaps between the door s panels when the door is closed are at least one thirty second of an inch wide you should be able to seal them effectively with the v type weatherstripping sold.
They come with a rubber threshold and glue and sometimes a caulking gun too.
Garage door stops strips of trim running along both sides and the top of the door opening cover the gaps between the door s edges and jambs and provide a weather seal by means of a flexible flap or flange that overlaps onto the door when it s closed.
This can be particularly helpful on older wood doors with panels that have flat edges.
Take your measure between the garage door and wall.
You can buy them in any diy store and they re very easy to install.
3 place the vinyl strip on the wall side where the wall meets the garage door.
Shut the garage door and go outside to seal up all the gaps.