TotalBoat Underdog Bottom Paint
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TotalBoat Underdog Bottom Paint

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!).

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$99.99 / ea
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Tech Spec Product Info User Generated Content

IMPORTANT! The TotalBoat Underdog paint you receive will have one of two EPA numbers. All Underdog paints have the same effective formula, and similar colors, but depending on the EPA number, will use different thinners and solvents. Look on the can label to find the EPA number, then refer to the Technical Data Sheet at left that matches the number on your can. The data below is for cans with EPA number 60061-132-89049. If the EPA number on your can is 9339-20-89049, please refer to the Technical Data Sheet for that number.

Info for cans with EPA number 60061-132-89049   
Thinning (Brush/Roller Application)  TotalBoat Special Brushing Thinner 100 
Thinning (Spray Application)  Xylene (Xylol) 
Cleanup  TotalBoat Special Brushing Thinner 100 or TotalBoat Dewaxer & Surface Prep 
Surface Prep Solvents  TotalBoat Special Brushing Thinner 100, 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 
Recommended Roller  3/16'' nap or foam solvent-safe roller cover 
Spray Equipment  Airless or conventional 

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

BRAND: TotalBoat
Number Of Parts: One Part
Type: Copper AF Paint
4.5 76

Underdog Bottom Paint


Have used for several years. Works as advertised. Xylene works well for a thinner. A good value.


Portsmouth, RI


Excellent product


The box came with everything you need to paint included.


LBI New Jersy


Excellent for my needs


I have a Fresh Water Boat that is trailered. This is the perfect product for the application. What amazed me was that not only did Jamestown send the paint at a very inexpensive price compaired, they also included a roller, tray and a full set of coveralls to wear, without increasing the price.


Canyon Lake Texas


Generally a good product.


I ordered 4 cans of black and 4 cans of red after that. No problem with the black however 2 of the 4 cans of red were not the same formulation. The viscosity of that product was too thin to stick to the boat and ran through the hull paint leaving our boats to be repainted. I think it was a batch error and doubt there is enough copper to stop barnacles. Otherwise if the quality is monitored by Petit it shouldn't be a problem. We've had success with the paint otherwise.

Bill's Boats

Seaside Heights NJ


I will buy this product again!


Good coverage, not as sloppy/drippy as I expected. Time to launch!

Capt. Jimbo

Grand Haven, MI


Happy customer


We order every year. Awesome company, great products, easy online ordering.

Harold T



It hit the spot!


Amazing how easy it was to apply.

Stuwped Products

Madeira beach florida


Great bottom paint for boat


Went on smooth. Everything included in the order was spot on.

Grady White Mike

Falmouth, MA


Awesome and very inexpensive


This bottom paint which I've been using for quite a few years now is great. What does grow on the bottom during the Season washes of very easily

John the Ocean guy

Danvers, MA

I would buy this product again.


26' sailboat: the gallon needed to be stretched thin to get two coats, but made it with none to spare. Will be used in New England, little curious to see how the economy paint holds off foul, but need to strip a lot of bottom paint off next year, so didn't want to spend a ton of coin this year on paint.




TotalBoat Underdog Bottom Paint



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