If you currently have trim around your garage door you will need to remove it before installing the new trim.
How to cut garage door trim.
Measure the inside dimensions of the garage door jamb horizontally across the top and vertically along both sides.
Measure for the brick molding the trim that will face the street starting with the top piece.
Step 1 remove old trim.
How to install trim around a garage door opening.
Then measure the length of the moulding from the inside point of the miter you just cut to the desired length.
Make a mark before you cut another 45 degree miter with the power miter.
Cut the first miter on the head moulding piece.
Set the power miter to a 45 degree angle.
Learn how to install our vinyl thermostop garage door trim.
Use an angle gauge to.
Nail the head moulding piece to the door jamb with trim nails.
Cut a piece of trim to that measurement.
How to trim a garage door opening 1.