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TotalBoat Underdog is a dependable, solvent-based, single-season antifouling bottom paint that provides outstanding protection against barnacles and other antifouling pests, at a very affordable price, and in all water conditions. Ablative technology allows the surface to polish away over time, minimizing paint build-up and releasing fresh layers of biocide as the season progresses. This ablative action works most effectively on boats that are used on a regular basis. Underdog's durable finish also stands up well to scrapes from beaching and trailering.
It has excellent adhesion on fiberglass, wood, steel, iron and most existing bottom paints that are in good condition.
Sold in Gallons, in Black, Red, or Blue.
Each order includes a free roller & metal tray kit, paint suit, abrasive pad, 1 roll of painter's masking tape, & two 10" stir sticks (a $10 value!).
| Specifications | Underdog Antifouling Paint |
|---|---|
| Thinning (Brush/Roller Application) | TotalBoat Special Brushing Thinner 100 |
| Thinning (Spray Application) | TotalBoat Spray Thinner 101 |
| Cleanup Solvent | TotalBoat Special Brushing Thinner 100 or TotalBoat Spray Thinner 101 or TotalBoat Dewaxer & Surface Prep |
| Surface Prep Solvent | TotalBoat Special Brushing Thinner 100 or TotalBoat Spray Thinner 101 or TotalBoat Dewaxer & Surface Prep |
| Primer (Bare Fiberglass / Bare Steel / Iron) | TotalBoat TotalProtect Epoxy Barrier Coat Primer for fiberglass and steel (not for use on aluminum) |
| Coverage | 500 sq. ft. per gallon |
| Number of Coats | 2 |
| Recommended Roller | 3/16'' nap or foam solvent-safe roller cover |
| Spray Equipment | Airless or conventional |
Technical Information
Underdog Features
- Economical marine antifouling paint.
- Excellent protection against barnacles in all water conditions.
- Durable finish resists abrasion from trailering and beaching.
- Easy to apply by brushing, rolling, or spraying.
- Apply to properly prepared fiberglass, wood, steel, iron, and previously painted surfaces in good condition.
WARNING: This product contains a chemical known to State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Reviews for TotalBoat Underdog Bottom Paint
March 28, 2023
Verified Purchase
Keeps the boat bottom critter free!
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February 1, 2023
Verified Purchase
I was recommended this product and I could not happier. As it was my first time doing a bottom on a boat I did not know what to expect. All in all, the product went on very well. Coverage was excellent. I would use again.
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May 11, 2022
If you order it through Amazon, you don't get all of the extras. Very disappointed. Now i have to buy it all separately.
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May 3, 2022
Verified Purchase
Great product, good price, fast delivery. Works well and covers as expected
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April 18, 2022
Verified Purchase
Used for 3 seasons in Chesapeake bay. Seems to work as good as the higher priced paints. Also the kit gives you everything you need.
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April 18, 2022
Verified Purchase
painted bottom of 22 ft sisu went on great first time use let you know how it holds up after season
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June 17, 2021
Verified Purchase
Seems a little thinner than most other ablative bottom paints, so ask me after the summer how well it worked. I tend to go under the boat every week or two anyway, so I'll have a good picture of the growth it allows.
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May 8, 2021
Verified Purchase
Great buy this paint came with everything needed to complete the task. I painted my 23' fishing boat after prepping the bottom, and it covered perfectly.
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April 27, 2021
Verified Purchase
I have used Underdog for 4 years, sailing in the fresh water Delaware River, saltwater Delaware Bay in the Chesapeake. I have had a few barnacles in saltwater but mostly slime, and a very light slime in fresh water. A quick swipe with a power washer wand and the hull is clean at winter haulout. Underdog goes on smooth, just remember to mix the can well before using as there is some separatiuon of solids and liquids.
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April 23, 2021
Verified Purchase
Works
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