Garage Door Bottom Seal for Uneven Floor: The Full Guide

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Last Updated on March 3, 2022 by John Patterson

Garage Door Bottom Seal for Uneven Floor

You have several types of garage door seals to choose from.

When it’s about picking a garage door seal, you’ve some specifics to consider before going for any particular seal.

You want your garage free from rodents, rainwater, bugs, dirt, and so on.

But guess what?

If you don’t know about the seal garage door meticulously, then very likely, things are not going to work correctly for you.

I prepared this article for you to guide you on seals, some of their types, and how to choose the best seal garage door.

Without any further ado, let’s dive right in.

Garage Door Bottom Seal for Uneven Floor

What is a Garage Door Bottom Seal?

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A garage door seal is nothing but a rubber strip that you affix to the garage door’s bottom. It can be a vinyl strip too.

You have to keep your garage clean, and it’s better to block the grass, bugs, leaves, or any other dirt than cleaning them all the time.

Right or wrong?

This is exactly when you need a sealed garage door.

A bottom seal can be of various types. If your garage door has a single channel retainer, then you need a kind of bottom seal. Similarly, you require a different kind of bottom seal for a double channel retainer.

Here are the seal garage door types –

  1. T-type bottom seal.
  2. J-type bottom seal.
  3. Bead seal.
  4. Bulb seal.

T-type seals are for single-channel retainers. It looks like an inverted ‘T,’ that’s the reason we call it a T-type bottom seal.

J-type bottom seals are also for single-channel retainers. It creates two ‘J’ shapes once you close the door, that’s why we call it a J-type bottom seal.

Bead seals are used in double channel retainers. Initially, it’s a flat rubber sheet. When you install a bead seal, it will be bent upwards and slide into the track at the bottom of the door.

You can choose among 3″,4″ or 6″ bead seals. When you have a beautiful straight floor, then you can go for either 3 or 4″. If you have a bit of an issue like a gap or crack with the floor, then better go for 4 or 6″ seal.

Bulb seals are used in single-channel retainers. A bulb seal is a round-shaped seal with a narrow end on the top. It’s one of the best options for uneven floors.

How to Choose the Best Garage Door Seals?

How to Choose the Best Garage Door Bottom Seals?

When you are going to choose the best seal or order a seal online, you have to consider certain determinants. I’m going to discuss the core considerations here.

Measure the Gap Between the Door and the Floor

First of all, you have to decide on the size of the seal you require.

As we are focusing on uneven floors mostly, you need to measure the size of multiple gaps your garage door has from the floor. Here, the gap is the distance between the floor and the bottom of the door.

Then, you have to consider the most significant gap and choose the seal size accordingly.

Measure the Width of the Door

You have to measure the width of the door too, and then choose the appropriate width of the seal based on that.

You can buy a wider seal than the width of your door. It’s because you can chop the extra width from the seal anytime. But if you go for anything short, that’s not going to work.

Measure the Thickness of the Panel

Measuring the thickness of the panel is essential to select the accurate retainer size. Though, this is not directly related to the seal size if you buy the bottom seal without the retainer. However, if you order a seal with a retainer, then you have to measure the thickness of the panel.

Determine the Type of the Seal

Above, I discussed some of the garage bottom door seal types.

They not only vary in style but also based on the number of channels of the retainer. Choosing the appropriate type of seal is crucial here to fit in the retainer.

For an uneven floor, choosing between the bead seal and bulb seal would be a sensible decision, in my opinion.

Determine What Level of Protecting You Need

Not all the bottom door seals give the same level of protection. If you want a seal that should safeguard the garage from flooding, then you have to buy a strong seal.

If you are living in an area where the weather remains calm for the most part, then a standard seal is up to scratch.

However, if a rainstorm is a regular incidence, then placing a threshold seal first would be the best idea. Then use a sturdy seal to block water from entering the garage.

Frequently Asked Questions (FAQs)

Question #1. How do I fix the gap at the bottom of my garage door?

Answer: You have several ways to fix the gap at the bottom of the garage door. The most common ways that people suggest are –

  • Replacing the seal.
  • Adjusting the limit switches.
  • Fixing the tracks if it’s not vertical when the door is closed.
  • Adding extra concrete to the floor.
  • Installing the threshold seal, etc.

If nothing works, you can call a professional to do the job.

Question #2. What is the best garage door threshold seal?

Answer: In my opinion, the Universal Garage Door Bottom Threshold Seal kit is the best one for you. It’s one of the best seals against wind-blown rainwater too.

Question #3. What gap should be under a door?

Answer: Ideally, the gap under a door should be ¼” at most.

Question #4. How do I adjust the gap on my garage door?

Answer: Two primary tasks you can do for adjusting the top gap are –

  • Checking the stops to see if it needs to be moved closer to the door or it needs a replacement.
  • Inspect the track to see if it’s out of plumb or not. The door needs to be closer to the stop and plumb. You may need to jab the door to do this.

Question #5. How do I mouseproof my garage door?

Answer: If you want to keep your garage from rodents, then use a rodent weather seal as a seal. Using a threshold seal will come in handy as well to block mice and other bugs.

Final Words

So, this is it.

I’m sure you have the basic idea of a seal, its types, and the core factors you should consider before buying one.

Don’t forget to install the seal properly. Knowing about the type of retainer is a must too.

Good luck!

Related Reading:
#1. Essential Car Accessories List
#2. Air Compressors for Home Garage Use
#3. 5 ways to save money for a home garage
#4. Converting a garage room into a bedroom.

About the author

John Patterson

Hi there! My name is John Patterson. I’m a meticulous guy who loves to deal with the perfect tools for various needs. No matter if it’s a woodworking tool or gardening tool or anything else, I don’t compromise the quality and usability. Since 2010 I’ve been testing different tools for different DIY and professional tasks. Later in 2015, I decided to share my knowledge with the world. I started by answering people in the forums and several Q/A sites like Quora. Then I founded this blog to aid others like you with my knowledge and experience.