Installation Instructions

Step One

Purchase a replacement garage door seal

You will need to purchase a new garage door seal to fill in the gap caused by protecting your cables. Once you have found the correct seal for your door, we have linked to some online websites that sell them and will ship to your door.

UNDOR protects your cables by taking the weight of your garage door. The result is roughly a 1 inch gap between your door and the floor. We fill in that gap with a new, taller garage door seal.

Door seals are measured by their flat width. During installation they get folded in half like a taco. So when shopping you’ll see sizing such as 3″ wide, 4″ wide, etc. That is not the height of the seal once installed, it is the width of the seal when laid flat.

When you are shopping for a new garage door seal, it needs to be tall enough to fill in a 1 inch gap. We have found that a 4″ wide door seal is usually enough to do the job, but some garages may need a wider seal, such as a 6″ seal, to fill in the gap.

Not all garage floors are the same, and some have significant ruts in them from years of use. This is an example of where an even taller garage door seal may be needed. Please do some investigating for your specific application to ensure you get the right seal for your unique garage.

Let’s find the right seal for your garage door. It’s important to know that there is no universal seal for all garage doors. There are many types of garage door seal types out there, and getting the correct one for your door will mean the difference between a simple install and a frustrating experience. 

The most common door seal type in North America is the T-Style Bulb seal, which uses T shaped ends to slide into the channel on the bottom of your door. Many major door manufactures choose this seal type. There are also J type door seals, bead style seals, and many others. You can find out which seal type your door takes by looking up the make and model of your door. You can generally find this information by looking at the inside of your door for a sticker placed there by the manufacturer. 

If you can’t find the make and model of your door, simply look at the ends of the seal track and try to see what kind of seal is currently installed.

Some Notable Exceptions

Wayne Dalton Doors take a special kind of seal. It looks similar to a T style, but is has a tear drop shape. We have links below to some online retailers that carry a 4″ Wayne Dalton specific door seal.

Wooden doors can sometimes present a challenge. Wooden doors can come with a simple foam seal that is nailed to the bottom of the door. This will not work with UNDOR, and you’ll likely need to install a track to the bottom of your door to accommodate a T style bulb seal. 

Waterproofing Thresholds present an interesting situation. If you rely on a waterproofing threshold to keep water out of your garage, please note that UNDOR is not a water proofing product and offers no protection against standing water. You could, in theory, cut your threshold to fit UNDOR at each end, and simply continue installation as normal. In this case, you would lose water protection where UNDOR is installed.

It is unlikely that you will find 4″ garage door seals at your local hardware store, Home Depot or Lowes. We have found that purchasing a seal from a dedicated online source is far easier and the selection is much better. Please see some online stores below that carry a wide variety of garage door seals, track kits, and harder to find seals including 4″ Wayne Dalton seals.


North Shore Commercial Door

Garage Door Weather

Garage Door Land

4″ T Style Seal

Ships to Canada and USA

Garage Door Parts Mart

Step Two

Install UNDOR

Watch the video to see how to install UNDOR from start to finish. We estimate that for most homes installation will take less than an hour. We also included some great tips and tricks along the way.

Not a DIYer? That’s ok. Contact a local garage door service company to assist with the installation of UNDOR in your home. Often they can provide and install the new door seal for you, as well as complete the installation of UNDOR.

Step Three

Replace Your Garage Door Seal

Replacing the garage door seal will likely be the most difficult part of the installation process. It can either go really smoothly, or present unique challenges. We have linked to some great YouTube videos below on installing garage door seals, we hope that helps you in your installation.

It does help to have a second set of hands to complete this, and some soapy water goes a long way. You’ve got this.

Step Four

Reset your garage door opener limits

The last step is to retrain your garage door opener where to stop. This varies depending on your garage door opener, but most of them follow a similar process.

A simple Google search of your garage door opener and “reset travel limits” should bring up the process for you. Don’t skip this step. It’s important that you reset your limits so you do not put undue stress on your opener or your garage door.

Time to Celebrate!

You’ve now successfully installed UNDOR! We hope it went smoothly for you.

Questions about installation? Let us know.
We want to hear about any unique installation challenges you may have. The more we know, the better we can help others who may have a similar situation to yours. Fill out the form below and let us know how we can help.