2 measure the garage door height.
How to fill in garage door gap.
After shimming the jamb you still have a gap that can allow air to flow and covering this gap with casing doesn t always provide enough insulation.
Garage door strut reinforcement.
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.
They come with a rubber threshold and glue and sometimes a caulking gun too.
Lay down a strip of vinyl weather stripping and transfer the measured length on it.
Shut the garage door and go outside to seal up all the gaps.
Use your scissors and cut this size.
If the gap is less than 1 2 inch wide you can.
If there s a slight gap at the bottom of your garage door then a garage door threshold is a great option.
Install a garage door threshold.
Https amzn to 2yolagt universal rubber garage door bottom.
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.
You can buy them in any diy store and they re very easy to install.