"It's not done until it's finished."

CrabCoat Exterior Marine Finish Clear, UV TopCoat

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The Ultimate Top Coat for Enduring Beauty and Protection in All Conditions

CrabCoat is an innovative, environmentally safe top coat that seamlessly matches the strengths of acrylic and urethane. It creates that familiar, oil-finished appearance without the disadvantages of oil-based products. A single-part, self-cross-linked system with exceptional weathering properties. Offering unparalleled ease of application, CrabCoat excels in sun and water, keeping your project beautiful for years to come.

Product Details


  • Preserve Your Hard Work – No more weathered, faded, or rundown projects. CrabCoat offers outstanding resistance to sun, water, and mildew, ensuring that your project maintains its beauty and protection even in harsh conditions.
  • YOU Friendly – CrabCoat is environmentally safe, low in volatile organic compounds (VOCs), and compliant with E.P.A. regulations. No need to suit up in protective gear as it has no harsh odors, is non-flammable, non-toxic, and can be easily cleaned up with water.
  • Versatile Application – Whether you prefer spraying or brushing, CrabCoat is suitable for both methods. Its flexibility allows it to withstand temperature changes without cracking or peeling.
  • Forever Clear – CrabCoat is formulated to be non-yellowing, keeping your project looking pristine for years to come. Additionally, it can be tinted with water-based colorants, offering customization options for your specific needs.


  1. Environment: An ideal environment for application is between 68ºF – 75ºF.
  2. Preparation: The surface being painted must be free from oil, water, and polish. Ensure the surface is clean from dirt and debris. You can use CrystaLac Surface Conditioner to prepare the surface for application.
  3. Application: Crab Coat can be sprayed or brushed on. We recommend a minimum of 4-6 coats for best UV protection. Since UV rays break down each layer from the top down, the more coats you use, the longer it will last.
  4. Recoat Time: Allow 2-4 hours between coats, and allow at least 2 weeks of dry time before exposing to the elements.
  5. Cure Time: Crab Coat can take up to 30 days to fully cure, depending on the number of coats.

Maintenance: We recommend you refresh your project with 1 or 2 new coats of Crab Coat every 1-2 years.


  • Store at room temperature in a dry place, out of direct sunlight.
  • Do not subject the product to freezing or hot temperatures.
  • CrystaLac products have a shelf life of 5 years after opening.

Safety info

  • Keep out of reach of children.
  • Do not allow children to use the product unsupervised.
  • If using a spray application method, wear proper eye and respiratory protection.

All of our products are water-based, low-VOC, making them non-toxic, environmentally friendly, and easy to use.

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Customer Reviews

Based on 7 reviews
Steve Brandt
Great coating - note shelf life

I have used CrabCoat for about 8 years. It is a great protective, non-yellowing coating that holds up in the humid, intense sun of south Florida. The only issue I have had with it (and I lost almost 2 expensive gals of the material) is that for some reason, it partially polymerized in the jugs after about 5-6 years. The result was a "mayonnaise" like consistency that made the CrabCoat useless. One of the gal jugs had never been opened. I will definitely use CrabCoat for future projects requiring high durability, but recommend using it within a year or two of purchase. Note that the manufacturer states that, outside of freezing, it should be stable for 5 years.

Hello Steve, we thank you for your feedback! As you mentioned, CrystaLac products maintain a 5 year shelf life if stored in an airtight container and have not been exposed to freezing temperatures. We thank you for contacting us when this happened so that we could help assist you. Please check your email from help@crystalac.com as we sent you a discount for your next order to help resolve the inconvenience. We did not have the orignal order in our system, so we were unable to determine where this product was purchased from as we have had resellers in past. We thank you for your review!

Peter Lilienthal
Holds up well

All water borne finishes are more difficult to work with than older solvent based finishes. CrabCoat is no different than others in this regard. That having been said, Crabcoat is a tough, resilient finish which is not too hard on your lungs and the environment. Make sure the temperature isn't too low when applying and curing. (specifics on the containers' labelling)
Gloss Crabcoat is less glossy than other brands glossy, and also, the satin is more matte than other finishes designated as satin, not so much so as to be a dealbreaker however.
I have had some fish-eye issues till I paid closer attention to the temperature and, more importantly, when spraying, I give it a dust coat and wait a little while for it to tack up, then finish by spraying enough more to wet out the surface(s) I want done. This seemed to prevent most (but not all) of the fisheyes. Plan out your "attack" as to quickly wet out the work piece without overspray forming. In other words, work into new areas with fresh coverage as you spray not out of them. Like with solvent borne finishes you want to keep a wet edge while spraying.
When brushing it pays to start by doing the edges and corners and tricky parts, then brush out the rest quickly with straight, long strokes. Avoid brushing the same places repeatedly. Your goal is to quickly apply Crabcoat with a minimal amount of "backbrushing". Do the tricky parts first, and be sure your brush strokes always move outward across any edges.
Crabcoat will have brushmarks in it if you apply it and then brush back over it to fix problem areas, but on the other hand if you walk away and let it cure you will see it's remarkable self-levelling qualities.
If you do not fully cover an area Crabcoat can pull back (the wet edge recedes) leaving an uncoated area that you previously brushed out, so watch closely and frequently to correct such problem areas. They typically are around edges and corners.


Excellent sealer


Love it
I’m finishing my fairy doors with sparkles and waiting a couple more hours in 2 days to coat at least 4 times more as they will be place outside in NYC area .. hopefully they will last the weather raining conditions
I’m glad I did my research and your product.
Thank you
The fairy door girl


Love it, works great!!