How to Replace Garage Door Trim

Garage Door
  • 2-4 hours
  • Beginner
  • 20-80
What You'll Need
Pry bar
Flathead screwdriver
Scissors or tin snips
Replacement garage door trim
Measuring tape

The garage door trim is as functional as it is decorative. Garage door trim can, over time, become worn or loose and will have to eventually be replaced. If you notice rain or drafts entering the garage that is a sign that the garage door trim has to be replaced. You can purchase garage door trim kits at home improvement stores. You can pick up replacement trim out of a variety of materials including hard vinyl. You can choose from several colors and you can even paint them. The article below will explain how you can replace the garage door trim yourself.

Step 1 - Remove the Old Garage Door Trim

Removing the trim is not hard to do but in order to do so, you need to open the garage door. Make sure it is all the way at the top then pull the cord that disconnects the door from the motor. This prevents the door from accidentally closing. Wedge the pry bar between the garage door trim and the jamb. Push down on the prybar to pop out the trim. Continue like this until all of the trim has been removed. Inspect the perimeter of the garage door for any nails that remain and remove them.

Step 2 - Sizing the Trim

Pull the garage door down to close it then measure the space between the jamb of the door and the opening at the top across the door. Use this measurement to trim the vinyl. Use the scissors to cut the vinyl strip but use the hacksaw to trim the solid section of the trim.

Step 3 - Install the Header

You will need an assistant to help you to install the header of the trim. Have your assistant hold the piece of trim up to the header. Place one nail on the other end. The solid strip will be supported by the header and the vinyl strip needs to be angled against the garage door just slightly. Place a brad nail halfway through the hard vinyl and header and another in the center and then another on the other end. Place a brad nail every six inches to secure the trim.

Step 4 - Install the Sides

Use the tape measure to measure the sides of the garage. Measure from the bottom of the garage up to the trim along the top of the garage door's header. Use this measurement to transfer to the vinyl door trim and then cut them to the correct size as you did in Step 3. Once the trim is cut place one side piece along the edge of the garage door. Make sure it is flush against the edge of the header and add a nail to secure it temporarily. Play with the vinyl trim so that is even with the edge of the door. Tack the bottom of the trim in place. Place a brad nail every six inches to secure the trim. Repeat with the second side.