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Tsunami Seal

Model # 53020

Internet # 202199786

20 ft. Black Garage Door Threshold Kit

This item has been discontinued.
The Home Depot no longer carries this specific product.

$94.95 /each




Model # 53020

Internet # 202199786

The Tsunami Seal Garage Door Threshold Seal mounts to your garage floor creating the perfect seal between your door and your garage floor. The Garage Door Threshold Seal creates a tight seal for your garage door which will keep leaves, dirt, water and snow from being blown under the garage door by the wind. Also, if you have a sloped driveway or an uneven garage floor and water is seeping under your garage door, the door seal adds a 1/2 in. tall barrier to the garage floor. The door seal will also help keep out unwanted insects and snakes. By creating a better seal, your garage will stay warmer during the winter and cooler during the summer, helping to keep your energy cost down. The door seal works great with all types of garage doors including roll up doors, hinged wood doors and walk through doors. The one piece strip is permanently secured to the garage floor with the included Liquid Nails Polyurethane Adhesive. Each kit includes the one piece Threshold Seal, two cartridges of Liquid Nails Ultra DutyTM Poly-Adhesive and a metal caulking gun and color installation instructions. Comes with a lifetime warranty.

California residents: see  Proposition 65 information

  • Creates a barrier against water, leaves, dirt and snow
  • Keeps out insects, snakes and rodents
  • Garage stays warmer during the winter and cooler during the summer
  • Helps to save energy
  • Works with roll up doors, hinged doors and walk through doors
  • Includes two cartridges of liquid nails ultra duty poly adhesive
  • Includes a metal caulking gun
  • Lifetime warranty

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Garage Door Part/Accessory Type 
Garage Door Seal 
Product Weight (lb.) 
11 lb 
Warranty / Certifications
Manufacturer Warranty 


Rated 4.8 out of 5 by 16 reviewers.
Rated 5.0 out of 5.0 by did what i needed it to It was easy to install, I only needed one tube of the glue. Product did what i needed it to do. November 11, 2015
Rated 5.0 out of 5.0 by Outstanding product Product was a little higher than others I looked at, however, I am a strong believer in, "you get what you pay for". This product was worth it. Did exactly what they advertise. I have had a leaking garage door for a couple years. After installing this product and having two very high yield storms roll through, was amazed at it's ability to keep all water out. Didn't find a drop the following morning. What a relief. September 15, 2015
Rated 5.0 out of 5.0 by Excellent solution to garage flooding. The garage floor had settled just enough to allow a minor flood after each rain. The threshold kit fixed the problem like magic. Was very easy to install; I did it myself in less than 1 hour (and I'm a senior citizen). Very pleased with this product. July 29, 2015
Rated 5.0 out of 5.0 by Excellent Product Our garage would always have standing water in it after a hard rain but once we installed the Tsunami seal we have had no further water in our garage. It's an excellent product...I wish I would have bought this years ago! It is absolutely worth the money, it was very simple to install, and we love it! July 7, 2015
Rated 5.0 out of 5.0 by Looking for a way to keep water out of my shop, this stuff worked as advertised! Very easy installation. After reading the previous reviews I did not even try to use the caulking gun that came with the kit. Two tubes was just barely enough for the 20' kit, another tube would have been nice. It has worked great keeping the water out of the garage and I would definitely this kit. If you plan to use the whole 20' kit get an extra tube of liquid nails to make sure you don't run short. July 8, 2014
Rated 5.0 out of 5.0 by Great Product This more than lived up to my expectations. Installed in less than an hour. Threshold withstood driving rain from hurricane Sandy, not a drop of water got under the garage doors. Very cheap caulking gun, and don't bother with the liquid nails that is provided, mine was dried up and useless, just spend a few dollars and buy some at the store . November 8, 2012
Rated 4.0 out of 5.0 by Good solution to a difficult problem The product was easy to install, but if your gluing surface is uneven it is difficult to keep it flat. Be prepared to use something to weigh down the sections that lift up before the glue dries. The caulking gun supplied with the order is flimsy and bent after a couple minutes of use. Pay attention to the corners where the threshold meets the door frame as you may need to use silicone to keep out the water. July 30, 2013
Rated 4.0 out of 5.0 by Tough Material! This material is tough to cut which is a good thing. It is some well made stuff. I cut this for 2 garage doors. One tube of liquid nails did these 2 doors and another door so I never needed to use the 2nd tube or the tube that came with the 10 footer. The only issue I had (again because of the great quality) was the corners wanting to roll down and leave a small hump. That was quickly remedied by cutting a board to size, laying it across the threshold and bringing down the garage door. It is a little expensive, but worth it. September 16, 2014
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