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Product Details

TotalBoat Spray Thinner 101 is a fast-evaporating reducer for spray application of most TotalBoat one-part paints, varnishes and primers, including Wet Edge, TotalTread, Topside Primer, TotalBilge, TotalGold, TotalBoat Lust varnish, Gleam varnish, Wood Sealer, Spartan, TotalBoat Underdog, Krypton, AlumiPaint AF, and Outdrive AF.

In temperatures below 60°F, you can use Spray Thinner 101 as a cool-weather brushing/rolling thinner for these products. You can also use it as a surface prep solvent wipe before applying these finishes.

Available in Quart and Gallon sizes.

Tech Specs
Technical Specifications TotalBoat Spray Thinner 101
Thinning Percentages, Spray Application 10-20%
Thinning Percentages, Cool Weather (Below 60°F) Brushing/Rolling Application 5-10%
Application Temperature Ranges Spraying - 40-95°F; Brushing/Rolling - 40-60°F
Coverage (sq ft/gal) 1 quart of Spray Thinner 101 per gallon of paint, primer or varnish, for most applications. Actual coverage will vary based on ambient conditions, products and application technique.
Info & Guides
***IMPORTANT: Thinning percentages are specific to each individual application, and will vary or exceed these values based upon desired flow or spray, ambient conditions, and the specific product being thinned. APPLICATION NOTE: For applications done in warmer conditions, where you're applying TotalBoat one-part finishes by brush/roller, use TotalBoat Special Brushing Thinner 100, for best results.

Technical Information

Spray Thinner 101 Features

  • For spray applications, improves flow and wet-edge working time for most TotalBoat one-part finishes.
  • Use as as brushing/roller thinner in cooler temperatures, below 60°F for most TotalBoat one-part finishes.
  • Evaporates quickly, Ideal as a surface prep solvent wipe to remove dust, grease and other surface contaminants.
  • Great for cleaning equipment and tools after priming, varnishing, or painting.

Compatible TotalBoat One-Part Finishes

  • Wet Edge premium topside paint
  • TotalTread non-skid deck paint
  • TotalGold decorative paint
  • TotalBilge epoxy bilge paint
  • Premium Topside Primer
  • Gleam Spar Varnish
  • Lust rapid-recoat marine varnish
  • Marine Wood Finish (all colors) - surface prep and clean-up solvent ONLY; use TotalBoat Special Brushing Thinner ONLY to thin Marine Wood Finish.
  • Wood Sealer varnish primer
  • Spartan multi-season antifouling paint
  • Krypton copper-free antifouling paint
  • Underdog antifouling paint
  • AlumiPaint AF antifouling paint for aluminum boats and pontoons
  • Outdrive AF antifouling paint for underwater metals, props, outdrives

WARNING: This product can expose you to chemicals including ethylbenzene, which is known to the State of California to cause cancer, and toluene, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to

Reviews for TotalBoat Spray Thinner 101

3 of 3 Reviews

June 2, 2023

By streetgang from Patchogue.

Verified Purchase

Product does what it is supposed to do. Item reads in scientific measures. A universal mixture chart for different substrates required

Bottom Line Yes, I would recommend to a friend

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December 4, 2022

I would use the product again and again
By Tony from NM

Verified Purchase

I use Total boat products on a restore of a 1973 compact 2 camper barn find, total boat products is easy to work with as long as you keep all the products with total boat, they say you can mix match with other product like with thinners, BUT don't do that, just stick with the same company, you'll save in the long run

Bottom Line Yes, I would recommend to a friend

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June 17, 2022

By Pop from Ga

Verified Purchase

The products are good and the service was great every thing was shipped on the time line that they said it would be

Bottom Line Yes, I would recommend to a friend

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