Old Masters Spar Marine Varnish

In stock
SKU: C92310-AERO UPC: 086348923102
Regular price $28.65 CAD
Get free shipping on hundreds of items!
35 day returns.
US customers taxes due upon delivery.

Shield Your Wood with Old Masters Marine Spar Varnish - Superior UV Protection!

Give your wood surfaces unmatched protection and a gleaming finish with Old Masters Exterior Oil-Based Spar-Marine Varnish. Perfect for a variety of outdoor projects, this tough varnish is designed to withstand the harshest elements, ensuring your wood stays beautiful longer.

Why Choose Old Masters Marine Spar Varnish?

Advanced UV Absorbers: This varnish packs a powerful layer of ultraviolet absorbers offering exceptional sun protection, keeping your wood vibrant and well-protected.

Ideal for Exterior Use: Whether it's your backyard fence, elegant railings, comfy lawn furniture, stately doors, or even your prized boat, our varnish is the defender of all your exterior wooden surfaces.

Interior UV Protection: Not limited to the outdoors, apply it on interior windowsills and door frames for an extra shield against solar rays.

Finish Varieties: Personalize your projects with a choice of Satin, Semi-Gloss, or Gloss finishes, ensuring you get just the look you desire.

Have Questions? Check our FAQ section or contact us for more information about Old Masters Marine Spar Varnish.

Old Masters Marine Spar Varnish Spec Chart:

Title Specs

Installation Temperature:

10° C (50° F) min /
26° C (80° F) max

Number of Coats Required:

3 coats minimum for exterior surfaces.

Recoat Time:

8 - 16 hours

Dry to Touch:

4 - 6 hours


24 hours befre light use. 7 days to fully cure.



Vehicle Type:


Dry Film Thickness/Coat:

2 - 3 mils


7.8 lbs/gal



Solids (% by Volume):

42 ± 1%

Finishes Available:

Satin, Semi-Gloss, Gloss


500 sq. ft./gal. Coverage will vary significantly depending on application method and condition of wood.

Old Masters Marine Spar Varnish Application Guide:


Old Masters Exterior Oil-Based Spar-Marine Varnish is a durable exterior coating
for use on wood surfaces. It contains ultraviolet absorbers for advanced sun
protection. Use on exterior surfaces such as fences, railings, lawn furniture, doors,
boats and marine surfaces. For interior use on windowsills and door frames for
added ultraviolet protection. DO NOT USE on wooden decks or steps, wood siding, log homes or wood boats below water-line.

As with all exterior clear finishes, this product will not offer unlimited protection
against the elements. Surfaces which receive direct sunlight may have to be recoated annually to maintain gloss and to prevent cracking and peeling.

Supplies Needed:

  • Fine grade sandpaper or nylon sanding pad
  • Tack cloth
  • Stir stick
  • Drop cloth
  • Quality, China bristle brush
  • Mineral spirits or paint thinner
  • Rubber gloves

Surface Preparation:

All surfaces must be clean, dry and free from dirt, wax, grease, glue and other
contaminants or penetration and adhesion will be affected.

  • Bare Wood Surfaces: Sand surface thoroughly with medium grit sandpaper and
    progress to fine grit sandpaper. Always sand in the direction of the wood grain.
    Remove dust with a tack rag.
  • Previously Finished Wood: Surface should be sanded to remove imperfections and gloss, using extra fine sandpaper (220 grit), sanding with the grain. Remove dust with a tack rag.
  • Stained Surfaces: Stain must be thoroughly dry before applying clear finish. Do not sand uncoated stained surface.


Stir thoroughly before and during application. DO NOT SHAKE. Do not apply in
direct sunlight or areas of extreme air movement.
1. Apply with pure bristle or polyester brush, flat pad or spray.
2. Apply in full, even coats. Flow on with minimum brushing to achieve a glass-like
3. Spar-Marine Varnish will dry to touch in 4 to 6 hours. Under ideal drying
conditions, allow 8 to 16 hours before recoating. Overnight drying is
4.Sand lightly between coats with fine sandpaper (220 grit) to produce a finer
finish and promote adhesion. If sandpaper gums up allow more dry time. Remove
sanding dust.
5. Reapply. For exterior surfaces, a minimum of three coats should be applied.

Note: DO NOT varnish before morning dew has evaporated or two hours before
sunset. Avoid varnishing on damp, humid days. Keep work area as dust free as
possible until finish has thoroughly dried. A slight ambering effect may occur over
light colored surfaces.


Do not thin. Used as packaged.

Clean Up:

Using a cleaning solvent, such as paint thinner or mineral spirits, is recommended for cleanup. The use of paint thinners or mineral spirits may violate VOC compliancy in your area. Check with your local government agencies to ensure proper compliancy.

Frequently Asked Questions:
Old Masters Spar Marine Varnish

Q1: Can I use Old Masters Marine Spar Varnish on my wooden deck or stairs?

A1: This particular varnish should not be used on wooden decks, steps, or wood siding as these surfaces require different forms of protection and maintenance.

Q2: What type of finish can I expect with Old Masters Marine Spar Varnish?

A2: We offer this varnish in Satin, Semi-Gloss, and Gloss finishes, allowing you to choose based on the visual impact you desire for your project.

Q3: How often should I reapply the varnish?

A3: For areas receiving direct sunlight, we advise recoating annually to maintain the desired gloss and to prevent the wood from cracking and peeling.

Q4: Is this varnish suitable for marine surfaces?

A4: Absolutely. This varnish excels in marine environments, providing a shield against the sun and water - just remember not to apply it below the water-line on wooden boats.

Q5: Why is UV protection important for wood varnish?

A5: UV protection in varnish helps in preventing discoloration and degradation of the wood surface due to prolonged exposure to sunlight, ensuring your wood features remain vibrant and healthy for longer periods.

See Why Our Customers Love
Old Masters Marine Spar Varnish

Customer Reviews

Be the first to write a review