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EPOXY BARRIER COAT PRIMER

Poseidon Extreme

Osmosis-protection epoxy Primer

POSEIDON EXTREME
$100.00
$100.00
Sale Sold out
Shipping calculated at checkout.

Needs 2 coats. Covers 15 linear feet. Hull Pro not included.

Size
Color

What Poseidon Extreme does

✓ Applies over epoxy barrier coat after full sand-down of existing bottom paint
✓ Creates an osmosis and corrosion barrier on fiberglass and metal hulls
✓ Low-VOC formula — no respirator needed in well-ventilated areas
✓ Combo kit includes both Part A Base & Part B Hardener
✓ Compatible with fiberglass, metal, and plastic above and below the waterline

Starting fresh without antifouling paint? Shop Hull Pro direct →

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Purpose-built for conversion

Bonds directly to bare gelcoat or to the epoxy barrier after sandblasting existing bottom paint off the boat. Not mandatory — but purpose-built and Armus-tested.

Corrosion & osmosis protection

Epoxy polyamide formula creates a barrier against hull osmosis and corrosion on gelcoat and metal surfaces — above and below the waterline.

OPTIONAL PRIMER

Any compatible epoxy primer works before Hull Pro — Poseidon Extreme is Armus-tested, but your detailer can color-match using other epoxy primers if needed.

What Poseidon Extreme actually is

A conversion requires the right foundation. Here is what that means.

Switching from traditional bottom paint to Hull Pro is a commitment — and we won't sugarcoat what it takes. All existing antifouling paint must be sandblasted off the hull, all the way down to epoxy barrier. That is the starting point. No shortcuts.

Once the hull is clean, you have two options: apply Hull Pro directly to the epoxy barrier, or apply Poseidon Extreme first. Poseidon Extreme is not mandatory — any compatible epoxy hull primer works. But it is the only primer specifically tested and formulated for this transition by Armus Marine, and it adds a layer of corrosion and osmosis protection that other epoxy primers may not provide.

Two coats. 24 hours to cure. Then Hull Pro goes on top. That combination is the standard Armus conversion install.

Sandblast to Epoxy Barrier

All existing antifouling paint removed. Hull taken down to epoxy barrier coat. This is not optional.

Apply Poseidon Extreme — 2 Coats

Recommended but not mandatory. 2 coats required. Allow 24 hours full cure before applying Hull Pro.

Apply Hull Pro

Standard Hull Pro application over cured Poseidon Extreme. Cures in 24 hours. Ready to launch 72 hours post-application.

Launch and Maintain

Hull Pro maintenance schedule applies. Your certified dealer logs the install.

We evaluated Poseidon Extreme on Cigarette Racing's Nighteagle 42, and what we saw was not only speed, but amazing protection.

R. Llorente

Top Gun Yachts · Cigarette Racing Nighteagle 42

See All Testimonials
Compatibility & substrates

Works on most vessel materials. Above and below the waterline.

Poseidon Extreme bonds to a wide range of substrates — making it suitable for most vessel types regardless of hull material. Low VOC formula means no respirator required in well-ventilated conditions.

Fiberglass

Standard gelcoat hulls. The most common substrate for Poseidon Extreme installs.

Metal

Steel and aluminum hulls. Adds corrosion protection on bare metal surfaces.

Plastic

Compatible with plastic substrates. Ask your certified installer to confirm suitability.

Low VOC — Under 300 g/L

No respirator required in well-ventilated conditions. No CA Prop 65 substances.

From the project gallery

Real conversions. Real results.

Before and after applications from our certified dealer and detailer network across the US.

43' Solstice

43' Solstice

Poseidon Extreme + Hull Pro Conversion

Full conversion from traditional bottom paint. Sandblasted to bare gelcoat, Poseidon Extreme applied, Hull Pro topcoat over cured primer.

Read the case study →→
Cigarette Nighteagle 42

Cigarette Nighteagle 42

Top Gun Yachts · Performance Conversion

Poseidon Extreme evaluated by Top Gun Yachts on a Cigarette Racing performance vessel. Speed gains and protection both documented.

Read the case study→

Ready for the topcoat? or starting from gelcoat?

Poseidon Extreme is the foundation. Hull Pro is what goes on top.

explore Hull Pro →

FREQUENTLY ASKED QUESTIONS

We’ve collected some of the most frequently asked questions about Poseidon Extreme and the Hull Pro topcoat. Below are some of the most commonly asked questions about our product, application, and care and maintenance.

What is the difference between hull osmosis and typical fouling?

Everyone’s water type will differ. It’s important for you to check with your marina to understand growth rate and patterns for your water type. Hull Pro is a performance coating and will require regular maintenance. We recommend you check our POST-APPLICATION CARE GUIDE for our recommended tools and tips for keeping the combination of Poseidon Extreme and Hull Pro looking its best on your hull, and for keeping your vessel protected.

Do I use the same amount of Poseidon Extreme and Hull Pro on my vessel?

No, you will need to apply more of the bottom coat primer than you will Hull Pro. To cover 20 linear feet of your vessel hull, you will need to apply 64oz of Poseidon Extreme Primer and 32oz Hull Pro topcoat. The package is sold in this ratio so it is important that you calculate the linear feet you require to coat your hull and purchase accordingly.

If you have any questions, find the contact us button bellow and reach out. We’re here to help!

How often do I need to clean my vessel after applying Poseidon Extreme and Hull Pro?

Everyone’s water type will differ. It’s important for you to check with your marina to understand growth rate and patterns for your water type. Hull Pro is a performance coating and will require regular maintenance. We recommend you check our POST-APPLICATION CARE GUIDE for our recommended tools and tips for keeping the combination of Poseidon Extreme and Hull Pro looking its best on your hull, and for keeping your vessel protected.

I just bought a boat with anti-fouling paint already applied to the hull. Can I use Poseidon Extreme instead of paying to have it sanded off?

Poseidon Extreme is able to be applied directly over existing anti-fouling paint after sanding as much of it off as possible. This eliminates the need for costly sanding and repainting with gelcoat. By using Poseidon Extreme as a tiecoat, you can save money compared to the traditional and more expensive process of removing and replacing the anti-fouling paint and choose to transition to a more eco-friendly topcoat like Hull Pro.

Can I power wash my vessel after application of Poseidon Extreme & Hull Pro?

Absolutely. A good power washing can help remove stubborn and hard growth. We recommend using a 2500-3500 PSI gas power washer.

Why/ when is in necessary to get the Poseidon Extreme package rather than just Hull Pro?

Poseidon Extreme is a conversion primer that allows you to switch easily away from traditional bottom paints. It stabilizes bottom paints to prevent further degradation. Together with Hull Pro, Poseidon Extreme provides further protection, extending the lifespan of your boat and improving its resale value!

How long does the Poseidon Extreme & Hull Pro combination last, and how often do I need to reapply?

Poseidon Extreme can last up to 5 years under normal conditions. However, the reapplication interval may vary depending on the specific conditions that the boat is exposed to. For example, boats that are used in saltwater or in areas with harsh weather conditions may need to be reapplied more often.

If you do see some scuffs or damage, you can touch up the top layer of Hull Pro by sanding around the area and applying another coat of Hull Pro. Remember, you’ll have to wait 24 hours for your touch-up to dry, and 48 hours for Hull Pro to be fully cured after application (72 hours total) before you relaunch your vessel.

If you need to fix the layer of Poseidon Extreme, you’ll have to sand past the original primer coating, and reapply both Poseidon Extreme and Hull Pro according to original application instructions.

How long after application of Poseidon Extreme until I can begin to apply Hull Pro?

You must allow Poseidon Extreme 24 hours to cure, before you begin to apply Hull Pro.

Still have additional questions? Contact us below. We’re here to help!

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PRODUCT DOCUMENTS & SPECIFICATIONS

PRODUCT DOCUMENTS

PDF Product Sheet PDF Technical Data Sheet PDF Safety Data Sheet PDF Application Guide PDF Care & Maintenance

TECHNICAL INFORMATION

Type

Epoxy polamide
Color

Solid: Available in Black or White
Components

Part A (Base) + Part B (Hardener)
Mixing Ratio

4:1 A:B per volume
VOC Content

<300 g/L
Solids by Volume

80%
Flash Point

>140°F (60°C)

APPLICATION INFORMATION

Type

32oz Primer / 17 oz Topcoat - ~15 linear feet

64 oz Primer / 32 oz Topcoat - ~23 linear feet
Application Temperature

41-95°F (5-35°C)
Substrate Application Temperature

41-95°F (5-35°C)
Maximum Pot Life (for both Primer & Topcoat)

~45 min @ 68°F (20°C)
Touch-Dry Time per Coat

3 h @ 68°F (20°C)
Dry Through Time / Curing Time per Coat

~24 h @ 68°F (20°C)
Minimum Coating Interval between Primer & Topcoat

~24 h @ 68°F (20°C)
Minimum Time to Launch

~72 h @ 68°F (20°C) (48 hours after full cure)

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