Set the power miter to a 45 degree angle.
How to cut garage door trim.
Nail the head moulding piece to the door jamb with trim nails.
Make a mark before you cut another 45 degree miter with the power miter.
Measure the inside dimensions of the garage door jamb horizontally across the top and vertically along both sides.
How to trim a garage door opening 1.
Learn how to install our vinyl thermostop garage door trim.
Then measure the length of the moulding from the inside point of the miter you just cut to the desired length.
If you currently have trim around your garage door you will need to remove it before installing the new trim.
Cut the first miter on the head moulding piece.
Step 2 cut your trim to size.
Measure across the top of trim on the outside of the door from the outside corners of both pieces of vertical trim that you just nailed on.
How to install trim around a garage door opening.
Cut a piece of trim to that measurement.
Step 3 position the weather stripping and trim above the garage.