- Use Outdrive AF on aluminum and other underwater metals
- Contains a high concentration of organic, copper-free biocide. Ideal for boatyards under environmental restrictions
- High-solids, eco-friendly antifouling paint provides outstanding, full-season protection against mussels, barnacles, and slime in salt, fresh, or brackish water
- Copper-free paint will not cause galvanic corrosion
- Also prevents hard and soft biofouling effectively on fiberglass and wood, and can be applied over most previously painted surfaces in good condition, including any that contained copper-based paint
- Ablative formula releases fresh biocide and stays smooth, preventing paint buildup so application is easier next season
- Color: Black
- Finish: Eggshell
- Size: Quart
- Primer: On all metals except for aluminum, prime with TotalBoat TotalProtect. For aluminum, OR TotalBoat Aluminum Boat Etch Wash and TotalBoat Aluminum Boat Barrier Coat
Too many barnacles spoil the prop
Barnacles and slime are not a discriminating lot—they’ll cling to anything. Outdrives and underwater metals need antifouling protection, too. The best time to think about it is before biofilm and hard-shell fouling have formed a crusty green beard on metal parts that help you steer and stay afloat.
Barnacles don’t eat holes in metal like they do in fiberglass and gelcoat, but their bodies block oxygen from the surface. This makes metal rust—even stainless steel, and causes a scary-sounding condition called crevice corrosion. The biocides in Outdrive AF keeps the biofilm from forming, and makes underwater metal surfaces inhospitable to barnacles and other marine fouling organisms.
Copper-free means never having to say you’re sorry to your sterndrive
Do not apply copper-based antifouling paint on underwater aluminum parts, unless you want to watch metals disintegrate from galvanic corrosion. Metal-destroying galvanic corrosion has a few causes, including stray electrical current from other boats in the harbor, or an improperly grounded electrical system on your boat. It also happens when dissimilar metals come in contact with each other underwater.
For example, copper and aluminum are dissimilar metals. They have different electrical potentials, and when in contact with each other, the resulting reaction will cause one of the metals to corrode—in this case, the aluminum. So it’s very important to keep any copper-based antifouling paint used on your hull away from underwater aluminum parts. Outdrive AF is copper-free, so it won’t cause galvanic corrosion. Remember to apply it on your through-hulls, too, because failures caused by galvanic corrosion have sunk many boats right on their moorings.
Very important: Do not paint your zincs and other sacrificial anodes, which are there to keep galvanic corrosion from damaging underwater metals. If you cover them with paint, they won’t be able to do their job, and you’ll get galvanic corrosion anyway.
Full-season protection for boats that stay in the water full-time
Fouling starts the minute you launch your boat. The warmer the conditions, the faster the biofilm grows. Outdrive AF is formulated with biocides and slime-fighting agents that provide protection for a full season for boats that spend most of the season in the water.
An epoxy primer makes the antifouling paint more effective
Priming reduces surface porosity and gives the antifouling paint a solid surface to adhere to. The paint will stick better and last longer. Aluminum surfaces need to be primed properly. Epoxy primer is recommended because it provides superior adhesion and corrosion protection. For best results, under Outdrive AF paint, prime steel and iron substrates with TotalBoat TotalProtect Epoxy Primer and Barrier Coat. Prep bare aluminum with TotalBoat Aluminum Boat Etch Wash allow to dry, then prime with TotalBoat Aluminum Boat Barrier Coat.
- Tralopyril (organic biocide: 6.00%
- Zinc pyrithione: 4.80%
- Application methods: Brush, roll (3/16″ nap or foam solvent-safe roller recommended), or spray
- Application temperature: 50-90°F
- Thinning: TotalBoat Special Brushing Thinner 100 (Brush/Roll); Xylene (Spray). Thin up to 10% (3 oz. per quart)
- Cleanup: TotalBoat Special Brushing Thinner 100 or TotalBoat Dewaxer & Surface Prep
- Number of coats: 1-2
- Dry time to overcoat: 1 hr. @ 90°F; 2 hrs. @ 70°F; 4 hrs. @ 50°F
- Dry time to launch: 2 hrs. @ 90°F; 4 hrs. @ 70°F; 8 hrs. @ 50°F
- Coverage: 400 sq. ft. per gallon @ 2 mils dry film thickness
- Solids: 58% by weight
- VOC content: <330 g/L
Frequently Asked Questions
Is Outdrive AF an ablative paint?
Yes. Outdrive AF is a copper-free ablative antifouling paint used on underwater metals.
What is the best way to apply this paint?
Outdrive AF can be applied by brush, roller, or spray. We recommend using a 3/16″ nap or foam solvent-safe roller cover.
Can it be used on aluminum?
Yes, Outdrive AF is safe to use on aluminum and other metals because it’s copper-free, so it won’t cause galvanic corrosion.
What thinner is used with this paint?
Outdrive AF should not require thinning, but if desired, use TotalBoat Special Brushing Thinner 100. If spraying, use Xylene. Thin up to 10% (3 oz. per quart).
Can Outdrive AF be used on fiberglass gelcoat?
Yes. While Outdrive AF is specifically formulated for use on underwater metals and aluminum boats, it has excellent adhesion to wood and fiberglass.
Should I use a clear coat over this paint?
No, it is not recommended to use a clear coat over Outdrive AF, which is a coating designed for application below the waterline. You would lose the antifouling properties by doing so.
Can this paint be applied over other paints?
Yes, it can be applied on previously painted surfaces in good condition, including any that contain copper, but do not apply it over vinyl or Teflon bottom paints.
How long will this paint last? How often do I need to apply it?
It offers full single-season protection. You will need to paint every year, like all paints intended for underwater metals.
Can it be used on a trailered boat?
Does Outdrive AF contain a slime-fighting agent?
Yes! TotalBoat Outdrive AF contains an organic biocide that attacks any build-up of slime and algae growth on your boat hull, propeller, outboard and outdrive.
Can you paint in the fall and launch in the spring, or does the boat have to be launched immediately?
Yes, you can paint now and launch later without risk of paint losing its antifouling properties. There is no maximum amount of time that the boat can be launched after painting.