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Garage Door Threshold

We offer two brands of garage door thresholds. There is no noticeable difference between the raw materials or quality. Both are American Made. The G-Floor threshold is less expensive and comes with the threshold, the adhesive and a 5-Year Warranty. The Tsunami Seal also includes a caulking gun and a limited lifetime warranty. Tsuanmi Seals ship same day * and the G-Floor product ships within three business days.

Tsunami Seal & G-Floor Garage Door Thresholds

Tsunami Seal & G-Floor Garage Door Thresholds The Tsunami Seal package includes the threshold (oversized by about 2 inches), the gun, and Liquid Nails brand adhesive. The G-Floor brand includes the threshold and adhesive only.


10′ G-Floor Garage Door Threshold from BLT in Black


Price Each:

$ 32.97

16′ G-Floor Garage Door Threshold from BLT in Black


Price Each:

$ 45.97

Tsunami Seal® Garage Door Threshold Seal 10′

SKU: 50000-10

Price Each:

$ 59.94

Tsunami Seal® Garage Door Threshold Seal 16′

SKU: 50000-16

Price Each:

$ 94.94

Tsunami Seal® Garage Door Threshold Seal 18′

SKU: 50000-18

Price Each:

$ 107.44

Tsunami Seal® Garage Door Threshold Seal 20′

SKU: 50000-20

Price Each:

$ 118.69

Tsunami Seal® Garage Door Threshold Seal 50′

SKU: 50000-50

Price Each:

$ 278.69

Tsunami Seal® Garage Door Threshold Seal 100′

SKU: 50000-100

Price Each:

$ 486.19
Garage Door Threshold

Garage Door Threshold Shown In Brown

Our garage door threshold seal kit comes complete with everything you need to install the threshold and seal your door. No more water, bugs, dirt, debris, and rodents that enter your home through your garage. This seals your door by counter-flashing the bottom seal and forming a barrier to pests, dirt, water, and debris! Please note that we now offer the G-Floor garage door threshold in black and the Tsunami Seal in gray, brown and black.

Important Note : The BLT kit contains only the threshold and the adhesive, and it has a 48-hour lead time for shipment. The Tsunami Seal is generally shipped the same day, includes a caulk gun, comes in three different colors, and has a lifetime warranty. Both products are PVC. We recommend black as it does not show tire marks.

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A garage door threshold from Garage Flooring will seal your door and keep the premises drier and cleaner. Check out our garage door seals. *Over 90% of orders placed before 4PM MST ship the same business day.

Includes Liquid Nails and Caulk Gun

Tsunami Seal Garage Door Threshold Kit. G-Floor Not Shown

Installing the material and sealing your garage door is easy. Simply position, mark, and glue. Please follow our detailed instructions for more information.

These thresholds are designed to be installed directly onto a concrete garage floor. Please read our precautions as well as the flooring manufacturer’s precautions before installing over a painted floor.

Unlike other seals on the market, our product comes with Liquid Nails brand adhesive and a caulking gun (gun not included on G-Floor brand). Our package is ready to install with no extra tools! All of our thresholds are sold at the guaranteed lowest prices.

Our garage door seal is available in three colors: gray, black, and brown. At Garage Flooring we know you want options, which is why we make more than one color available to you!

garage door sealOur garage door seal profile. As shown here, the threshold measures 3-1/2″ in width and 1/2″ thick at its tallest point. The seal is concave on one side and stair-stepped on the other to give you the most options when installing.