TotalBoat Underdog Bottom Paint

$124.99In StockSee Product Details
TotalBoat Underdog Bottom Paint
TotalBoat Underdog Bottom Paint Free Accessories with Gallon Purchase
TotalBoat Underdog Bottom Paint Color Chart

This item is eligible for free shipping on orders over $99.99

Product Details

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!).

Tech Specs
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
Info & Guides

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

10 of 88 Reviews

May 11, 2022

This is great paint I've used it for years but....
By dbinvermont from Burlington, VT

If you order it through Amazon, you don't get all of the extras. Very disappointed. Now i have to buy it all separately.


Was this review helpful to you?

May 3, 2022

great product
By PWMBOAT from Rochester NY

Verified Purchase

Great product, good price, fast delivery. Works well and covers as expected

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 18, 2022

Great value
By G&G from Yardley, PA

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.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 18, 2022

iwould buy this product again
By tman from Newport RI

Verified Purchase

painted bottom of 22 ft sisu went on great first time use let you know how it holds up after season

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

June 17, 2021

Goes on great
By Old Salt from Woods Hole, Massachusetts

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.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

May 8, 2021

Bottom Paint complete kit
By Mr D from Bristol, RI

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.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 27, 2021

Bottom paint
By Colin from Philadelphia

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.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 23, 2021

It's half the price of the other stuff
By Boat Diddley from Chicago

Verified Purchase

Works

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

April 12, 2021

Worked well
By Giggles from Eastern shore MD

Verified Purchase

Bottom looked great after a season in brackish water in MD. A lot of barnacles on running gear, but not on paint. Great price, especially with the extras in the kit.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?

March 31, 2021

Bottom care
By Reelman from Dahlgren Va.

Verified Purchase

Priced right very effective and all in one pkg.

Bottom Line Yes, I would recommend to a friend

Was this review helpful to you?