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How Do I Frame My Garage Door Jamb?

Our Neighborhood Garage Door team is excited to be here for you for all of your garage door journeys. We want you to be confident in our company every step of the way. We hope that you find this article informative and that it helps you with your DIY needs.

What Is A Garage Door Jamb?

Your garage door jamb is a side post that will run from your floor to the underneath of the header at all sides of the opening. Sometimes a finished piece of trim or lumber will attach across the underside of the header. Installing the jambs are part of the framing process of the garage door opening.

Step One

You will need a stepladder to stand on at the side of the framed door opening. Then you will measure how far the distance from the floor to the outer edge header of the vertical frame. This will ensure that you have the correct height established for the height of the jambs.

Step Two

You will then want to place two sawhorses parallel to each other, about 6 feet apart. Take two 2×8 pieces of lumber and place them on the horses, then measure them to the correct height and mark them on the edge. Now this will be the front edge of your garage door jamb.

Step Three

You will need an adjustable square for this step. Make sure to position the adjustable handle of a square against the outside edge of the frame, with the blade on the underneath side. Make sure that the blade is pointing towards the inside of the garage.

Step Four

When marking the jambs for cutting, keep in mind that garage doors are sloped to ensure they can drain. Slide the handle of the adjustable square until it reaches the floor. You will then adjust the blade so it will rest on the floor surface.

Step Five

Place the handle of the square up against one side of the garage door jamb. Make sure to slide the square so the blade and your mark align. Place the square so the long point of the angle is on your mark. Mark the floor’s angle on the jamb face, then repeat this step on the remaining jamb

Step Six

Now you will need safety glasses and a circular saw to cut the jambs to length. Stand the jamb up at one side of the opening, flush against the frame, with the angled side at the floor. Make sure the to position the jamb so the outside edge extends an inch from the outer face.

Step Seven

You will need 2 galvanized nails, a 4-foot level, and a finishing hammer for this step. Partially hammer the galvanized nails about 3 inches from the top of the jamb to hold it in place. Hold your level against the outside of your jamb and tap the jamb’s lower edge until it is level.

Step Eight

Now you will drive pairs of galvanized nails along the front of the jamb, about 24 inches apart. Then you will set them by using the threaded end of the bolt. Strike the head of a ⅜-inch bolt with your finishing hammer and set your nails. Repeat this on the other side of your frame and you are finished!

Give Us A Call

We hope that you find these instructions helpful and save you some time when it comes to getting your garage ready. If at any time you find that you need help or have questions, you can give us a call. Neighborhood Garage Door Repair looks forward to hearing from you!

You Can Trust Us for the Job

positive reviews

They sent Doug Fussell out to my house on the day after Christmas! I had only called them three days before! Doug was a premier technician, very thorough and very efficient. I expected him to take two days, since he was replacing two doors and adding openers on each door. He only took the daylight hours of one day! I could not believe how fast he was! In addition, he thoroughly taught me how to use the remote openers. I highly recommend them to anyone!
~Donald B.

positive reviews

We just bought a home and this company was so understanding as I had to change the appointment time a few times. Then the tech came out and was so kind and helpful. I could not have asked for a better experience and will suggest them to anyone who needs work done on their garage door!
~Tammy K.

positive reviews

My garage door broke on a Saturday night as I was getting ready to leave for a holiday party. Kelvin was here within 30 minutes. He reviewed everything with me that was happening with my door. He gave me the estimates of what was immediately needed to be done in order for my door to raise and then what I will need to have done very soon. I could see all the problems he pointed out to me and I decided to have everything done. He completed everything that night. I was very satisfied with Kelvin’s professionalism and the work he did. Thank you again.
~Joyce N

We Service All Makes and Models of Garage Doors and Openers