Step 4 install the sides.
How to change garage door trim.
How to replace garage door trim.
Step 3 install the header.
Step 1 remove the old garage door trim.
Insert the tip and repeat prying to.
Removing the trim is not hard to do but in order to do so you need to open the garage door.
Insert the tip of a flat crowbar under the trim.
Tap on the back of it with a hammer to drive the tip in as far as you can.
Avoid placing the nails close to the ends of the trim.
Pry on the crowbar.
Depending on the thickness of your trim you may need larger nails.
How to redo rotten trim around a garage door.