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.
How to fill in garage door gap.
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.
3 place the vinyl strip on the wall side where the wall meets the garage door.
Install a garage door threshold.
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.
2 measure the garage door height.
Https amzn to 2yolagt universal rubber garage door bottom.
Shut the garage door and go outside to seal up all the gaps.
Lay down a strip of vinyl weather stripping and transfer the measured length on it.
You can buy them in any diy store and they re very easy to install.
If the gap is less than 1 2 inch wide you can.
Take your measure between the garage door and wall.
Gaps along the sides and top of the door.
If there s a slight gap at the bottom of your garage door then a garage door threshold is a great option.