SKU: 42795036884

Marine Spar Urethane Varnish

Sale price$44.99 Regular price$49.99
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

Marine Spar Urethane VarnishSystem Three Spar Varnish is a urethane enhanced film finish formulated to protect against the harshest salt water and marine environments, as well as provide protection for your outdoor projects. It contains UV absorbers and other additives that help it combat the worst that nature has to offer. System Three Spar Varnish, like all outdoor film finishes, is more elastic and a bit softer to enable it to move with the wood as it expands and contracts

System Three® Spar Varnish is a urethane enhanced film finish formulated to protect against the harshest salt water and marine environments, as well as provide protection for your outdoor projects. It contains UV absorbers and other additives that help it combat the worst that nature has to offer. System Three Spar Varnish, like all outdoor film finishes, is more elastic and a bit softer to enable it to move with the wood as it expands and contracts with the seasons. It’s a good finish for outdoor furniture and projects in general but like all outdoor finishes, it could use a little help – a good base underneath to keep it looking good longer. We recommend sealing the wood underneath with a good waterproofing sealer.

The number one enemy of an outdoor film finish is moisture that gets into the wood and underneath the finish. Moisture makes its way into the wood via the wood actually breathing (a result of not sealing the wood off from ambient moisture in the air), as well as through micro fissures in the topcoat caused by temperature extremes and UV radiation. So, if you’re contemplating a film finish for your outdoor furniture – consider using a good sealer underneath. A sealer will combat this “breathing” the wood does and be a barrier to prevent moisture from expanding underneath the topcoat, even if it manages to get through the micro fissures. The bonus for this hard work is your finish will look good well beyond what you might otherwise expect…but not forever.

Start with a good sealer such as System Three Clear Coat. If it’s going to be outside all the time all year long and even if it’s not, System Three recommends encapsulating the wood with System Three Clear Coat prior to assembly. This will effectively stop the wood from breathing and provide an excellent base for the topcoat to adhere to plus it will stop moisture from spreading underneath the finish through micro fissures. Be advised that even if you follow all these recommendations, you will still need to take steps to care for your project in the off-season and to eventually apply a new coat or two of finish or remove the old finish down to the Clear Coat and recoat the piece. However, following our suggestions will keep your Adirondack chair or other outdoor project looking good longer, and it will be easier to recoat when necessary.

Features:


  • Designed for marine and exterior wood surfaces
  • Offers excellent protection from salt air and water
  • Contains ultraviolet light absorbers that protect finish from exposure to sunlight
  • Formulated to cure properly over System Three epoxy products
  • Does not require sanding between coats when additional coats are applied within 24 hours
  • VOC compliant

Specifications:

  • Type: Oil-modified urethane polymer
  • Size: Quart
  • Sheen: Gloss
  • Color: Very light amber
  • Interior/Exterior Use: designed for exterior use
  • Recommended Use: Directed at, but not limited to, the finishing and coating of wood
  • Application Method: brush, roll, spray
  • Coats: varies per project (see PDF System Three Clear Finishing of Outdoor Wood)
  • Coverage: 100-125 sq.ft.
  • Minimum Application Temperature: 50°F
  • Maximum Application Temperature: 95°F
  • Ideal Drying Conditions: 77° F and 50% humidity
  • Dry Time - Tack Free: 4-6 hours
  • Dry Time - Dust Free: 8-12
  • Dry Time - Recoat: 12-24 hours
  • Dry Time - Complete Cure: 14 days
  • Clean-Up: mineral spirits or lacquer thinner
  • Material VOC (g/L) 440-450 g/L

What's Included:

  • (1) Marine Spar Urethane Varnish - Gloss - Quart

Notes:

  • Please see the PDF from System Three (link on this page) for more information on finishing outdoor wood.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 42795036884

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4.4 ★★★★★
Based on 12 reviews
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Verified Purchase
The Granny Nanny
San Leandro, US
★★★★★ 5
It lasted over a week- amazing for the fogzilla!
Size: Large, Color: Monkey - Green
There is no dog toy that can survive big puppies with strong jaws and sharp teeth, but the squeaker lasted a week and the arms/ legs are still intact. She's still playing with it, so I'm impressed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
A
Verified Purchase
Amazon Customer
Whiting, US
★★★★★ 1
Dye comes off. Stained hands and dog fur.
Size: Large, Color: Octopus - Multi Color, Size: Large, Color: Octopus - Multi Color
Literally dyed my hand and my dogs fur blue from the paint coming off immediately after opening the box. I have washed my hand multiple times and it’s still this color. I have given up on my dog’s fur. I’m assuming whatever it was wasn’t great for her to digest.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
C
Verified Purchase
Carol Crawford
Belleville, US
★★★★★ 5
Not chew proof but great for stimulating your dog!
Size: Large, Color: Octopus - Multi Color, Size: Large, Color: Octopus - Multi Color
8 legs gone in one night! Haha to be expected because my dog is a heavy chewer. Like other costumers we are left with a blue ball which she still plays with. It’s a great toy for days that my dog really needs to get energy out. She was so tired after, she was panting like she ran for miles. I suggest combining physical exercise with things like purposeful chewing or licking toys to tired them out. Doing this has reduced my dog’s anxiety tremendously over the years therefore reducing destruction of our furniture 😅 a tired pup is a happy pup!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
B
Verified Purchase
Bullhead
Birmingham, US
★★★★★ 3
It’s not for a big dog with large teeth
Size: Large, Color: Rabbit
The dogs Already chew its nose off Didn’t last 2 days. We are trying to sew it up. It will probably end up in the trash Thought this bunny is very cute. I’d only buy it for children to play with it. Or maybe a tiny dog.
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Reviewed in the United States on May 18, 2026
F
Verified Purchase
Francisca Degen
Louisville, US
★★★★★ 5
Great despite mild defect!!!
Size: Large, Color: Octopus - Multi Color
this is a great toy for my pup! I love goDog toys because they last a long time for my destructive Aussie. This is my dog's favorite toy right now. He brings it to me constantly for a nice game of tug-o-war. It did rip within a month but the rips are staying intact thanks to the method goDog uses to put these toys together. I would not drop the rating for this, but I will admit the bottom cloth used to sew all the legs in tears easily. It is doing well after I sewed reinforcement into them but it would be nice if GoDog found a way to reinforce that piece to improve the toy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026

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