Penofin Marine Oil Wood Finish

Marine Wood Finish for Boats & Docks

Penofin Marine Oil Wood Finish is a penetrating exterior oil finish designed to protect and enhance natural wood exposed to marine and outdoor environments.

Formulated with Brazilian Rosewood Oil, Marine Oil penetrates deeply into wood rather than creating a conventional surface film. This helps preserve the natural appearance of the wood while avoiding the cracking, peeling and difficult stripping associated with film-forming finishes.

Use it on boats, cabins, cockpits, decks, railings, docks and other exterior wood where a natural, hand-rubbed appearance and easy maintenance are priorities.

Why Choose Penofin Marine Oil?

• Designed for exterior and marine environments

• Up to 99% UV protection

• Superior mildew protection

• Brazilian Rosewood Oil

• Deep-penetrating oil finish

• Non-film-forming

• Non-yellowing and non-darkening

• Fast drying

• Easy to maintain and touch up

• Helps preserve and condition wood

• Available in translucent Natural Tone

• Can produce matte or hand-rubbed finishes

Where Can Marine Oil Be Used?

Penofin Marine Oil is designed for exterior wood applications including:

• Boats

• Cabins

• Cockpits

• Docks

• Decks

• Railings

• Siding

• Log homes

• Outdoor furniture

• Fencing

• Spas

• Exterior floors

• Doors

• Window trim

• Wood art

Marine Oil can be used on wood components of both wooden and fibreglass boats.

Brazilian Rosewood Oil

Penofin Marine Oil contains Brazilian Rosewood Oil, allowing the finish to penetrate deeply into the wood fibres rather than creating a heavy surface film.

This penetrating action conditions and protects the wood while enhancing its natural grain and appearance.

Because Marine Oil is non-film-forming, maintenance areas can generally be cleaned and recoated without the extensive scraping and stripping commonly associated with varnish-type finishes.

99% UV Protection

Penofin Marine Oil provides up to 99% ultraviolet protection to help protect exterior wood from damaging UV exposure.

This makes it particularly useful for wood on boats, docks, decks and other exterior surfaces exposed to prolonged sunlight.

Matte or Hand-Rubbed Finish

Marine Oil can be used to create different appearances depending on the application method.

For a flat matte appearance, apply the product, allow it to penetrate and thoroughly remove the excess with a clean, lint-free cloth.

For a more lustrous hand-rubbed appearance, multiple coats of the appropriate formula may be wet-sanded to build a self-filling finish.

Always follow the instructions for the specific VOC formulation shown on your container.

Surface Preparation

Penofin Marine Oil must be able to penetrate into the wood, so proper surface preparation is essential.

New wood: Use Penofin First Step Prep to lightly clean the surface and help remove mill glaze.

Older bare wood: Clean with Penofin Pro-Tech Cleaner #2.

Greyed or discoloured wood: Follow cleaning with Penofin Pro-Tech Brightener #3.

Previously coated wood: If the wood has been treated with a non-Penofin finish, Penofin recommends chemically removing the previous coating, followed by Cleaner #2 and Brightener #3.

Allow the wood to dry completely before applying Marine Oil.

Prepare Wood Before Marine Oil

Proper surface preparation helps Penofin Marine Oil penetrate evenly and produce a consistent, long-lasting finish.

For new or uncoated wood, use Penofin First Step Prep to help remove mill glaze and prepare the surface for a penetrating oil finish.

For older, dirty or weathered wood, clean the surface with Penofin Pro-Tech Cleaner #2. If the wood is greyed, darkened or discoloured, follow cleaning with [Penofin Pro-Tech Brightener #3 to help restore the natural appearance of the wood before applying Marine Oil.

Allow the wood to dry completely before applying Penofin Marine Oil.

How to Apply Penofin Marine Oil

Stir the product thoroughly before and during application.

Apply when temperatures are between approximately 7°C and 27°C (45°F–80°F).

Relative humidity should not exceed 85%, with below 80% preferred for best results.

Do not apply when the wood is hot to the touch.

Marine Oil can be applied using:

• Brush

• Stain pad

• Plastic pump sprayer

Apply a liberal coat to clean, dry wood.

Allow the finish to penetrate for approximately 20–30 minutes.

Thoroughly wipe the surface with a clean, lint-free cloth to remove all excess finish.

Marine Oil is a penetrating finish rather than a surface coating. Failure to remove excess product can result in a sticky or tacky surface.

Softwood Application

Apply a liberal coat using a brush, stain pad or plastic-tip pump sprayer.

Allow approximately 20–30 minutes for penetration before thoroughly removing excess finish with a lint-free cloth.

If your specific container is the two-coat 550 VOC formulation, Penofin permits a second light coat after a minimum of approximately four hours. Allow the second coat to penetrate and again remove all excess.

Follow the instructions on your specific container because application requirements can vary by VOC formulation.

Hardwood Application

For hardwoods, use a brush, stain pad or sprayer. Penofin notes that brushes and stain pads generally provide the best results.

Apply thoroughly and back-brush the Marine Oil into the wood, leaving little to no excess.

After approximately 20–30 minutes, wipe the entire surface with a clean, lint-free cloth.

Do not allow a film to develop on the surface.

Hardwoods require one coat of the penetrating oil finish for the initial application.

Drying & Cure Times

Under normal conditions:

Dry to Touch: 3–4 hours
Serviceable: Approximately 12 hours
Moisture Resistant: Approximately 24 hours
Full Cure: Approximately 4–7 days

Temperature, humidity, wood species and application thickness can affect drying and curing times.

Coverage

Penofin's current Marine Oil data sheet lists general coverage at approximately:

175–300 sq. ft. per gallon

Coverage varies according to wood porosity, surface texture, moisture content and application method.

Dense hardwoods may provide greater coverage because they absorb less finish.

Marine Oil Colour

Penofin Marine Oil is available in a transparent Natural Tone designed to enhance the natural colour and grain of the wood.

Because the underlying wood influences the final appearance, always test Marine Oil on an inconspicuous area before completing the entire project.

Maintenance

One advantage of a penetrating oil finish is straightforward maintenance.

Keep finished wood clean and avoid allowing debris or standing water to remain on the surface for extended periods.

Penofin recommends cleaning the surface approximately twice per year with Penofin Pro-Tech Cleaner #2.

If the wood has greyed or darkened, follow with Penofin Pro-Tech Brightener #3.

Once the wood has dried, worn areas can be refreshed with another light application of Marine Oil.

Technical Specifications

Product: Penofin Marine Oil Finish
Type: Penetrating exterior wood finish
Use: Exterior
Finish: Natural / hand-rubbed
Colour: Transparent Natural Tone
UV Protection: Up to 99%
Coverage: Approximately 175–300 sq. ft./gal
Application Temperature: 7°C–27°C (45°F–80°F)
Maximum Relative Humidity: 85%
Preferred Humidity: Below 80%
Dry to Touch: 3–4 hours
Serviceable: Approximately 12 hours
Moisture Resistant: Approximately 24 hours
Full Cure: Approximately 4–7 days
VOC: <550, <250 or <100 g/L depending on formulation and local regulations
Cleanup: Paint thinner or mineral spirits
Finish Type: Non-film-forming penetrating oil

Always refer to the label on your container for the VOC formulation and corresponding application instructions.

Oily Rag Safety

Oil-soaked cloths and rags can spontaneously combust if handled improperly.

After application, soak used oily cloths and rags in water and place them in a sealable metal container away from buildings and combustible materials.

Dispose of used materials according to local regulations.

Frequently Asked Questions

What is Penofin Marine Oil Finish?

Penofin Marine Oil is a penetrating exterior wood finish formulated with Brazilian Rosewood Oil. It is designed to protect and enhance wood exposed to marine and outdoor environments.

Can Marine Oil be used on boats?

Yes. Penofin specifically recommends Marine Oil for boats and states that it can be used on wood components of fibreglass boats as well as wooden boats.

Can Marine Oil be used on docks?

Yes. Docks are one of Penofin's specified applications for Marine Oil.

Can Marine Oil be used on decks?

Yes. Marine Oil is suitable for exterior wood decks.

Does Marine Oil provide UV protection?

Yes. Penofin states that Marine Oil provides up to 99% ultraviolet protection.

Does Marine Oil form a surface film?

No. Marine Oil is a penetrating, non-film-forming finish designed to penetrate into the wood fibres rather than create a conventional coating film.

Will Penofin Marine Oil peel?

Because Marine Oil penetrates the wood rather than creating a conventional surface film, it avoids the typical peeling and flaking associated with film-forming finishes when properly applied and maintained.

How many coats of Marine Oil are needed?

Application depends on the wood and specific VOC formulation. Hardwoods require one initial coat. Penofin's two-coat 550 VOC formulation can receive a second light coat after the required waiting period.

How long should Marine Oil penetrate?

Allow Marine Oil to penetrate for approximately 20–30 minutes before thoroughly removing all excess product with a clean, lint-free cloth.

Do I have to wipe off Marine Oil?

Yes. Marine Oil is a penetrating finish. All excess product should be thoroughly removed after the penetration period to prevent a sticky or tacky surface.

How long does Marine Oil take to dry?

Marine Oil is typically dry to the touch in 3–4 hours, serviceable after approximately 12 hours, moisture resistant after approximately 24 hours and fully cured in approximately 4–7 days.

What is the coverage of Marine Oil?

Penofin lists general coverage at approximately 175–300 sq. ft. per gallon. Actual coverage varies with wood species, porosity, surface texture and moisture content.

What temperature can Marine Oil be used at?

Penofin recommends applying Marine Oil between approximately 7°C and 27°C (45°F–80°F).

Can Marine Oil be sprayed?

Yes. Penofin allows application using a suitable sprayer, as well as a brush or stain pad.

What colour is Penofin Marine Oil?

Marine Oil is available in a transparent Natural Tone designed to enhance the natural appearance and grain of the wood.

How do I clean application tools?

Clean brushes and other application equipment with paint thinner or mineral spirits.

Can I apply Marine Oil over old stain?

Marine Oil needs to penetrate the wood. Penofin recommends chemically removing previously applied non-Penofin finishes, then preparing the wood with Pro-Tech Cleaner #2 and Brightener #3 before application.

How do I maintain Penofin Marine Oil?

Keep the wood clean and free of prolonged standing water. Clean periodically with Penofin Pro-Tech Cleaner #2 and use Pro-Tech Brightener #3 if greying or discolouration occurs. Worn areas can then be refreshed with a light application of Marine Oil.