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Product Details

TotalBoat Topside Primer is a premium marine undercoat compatible with one-part and two-part topside finishes. Intended for use above the waterline, it can be sprayed, rolled, or brushed prior to painting with polyurethane or enamel topside paints.

Use on wood, fiberglass, gelcoat, & over previously painted materials. This single-part, high-solids primer requires only a single coat, dries quickly & sands easily. Thin with TotalBoat Special Brushing Thinner 100 when brushing, and TotalBoat Spray Thinner 100 when spraying. TotalBoat Topside Primer comes in White or Gray in Quarts and Gallons.

We recommend this primer with our TotalBoat Wet Edge Topside Paint, available in 21 brilliant colors.

IMPORTANT: Stir primer continuously for five minutes before use.

Tech Specs
Vehicle Type Phenolic Modified Short Oil Alkyd
Application Method Brush, Roll or Spray
Number of Coats 1-2 coats
Dry Film Thickness (per coat) 1-2 mils
Wet Film Thickness (per coat) 3 mils
Application Temp 50-90°F
Application Humidity 0-90 %
Dry Time (to touch) 1 hour @ 50°F 30 mins @ 70°F 10 mins @ 90°F
Dry Time (to overcoat) 4 hours @ 50°F 2 hours @ 70°F 1 hour @ 90°F
Coverage 350-400 sq ft/gal
Finish Sheen/Gloss Flat (5-10°)
VOC < 358 grams/liter
Flash Point
Solids (by weight) 61-64 %
Solids (by volume) 42-45 %
Info & Guides

Preparation & Application Tips

Preparation is the key to good-looking, long-lasting, results. A properly prepared surface is clean, solid and dry. Do not paint immediately after rain, during foggy weather or when the temperature is below 50 degrees Fahrenheit.

If brushing/rolling, thin 5-10% with TotalBoat Special Brushing Thinner 100, if desired, and use a foam roller or firm polyester brush, for best results. If spraying, thin 10-20% with TotalBoat Spray Thinner 101, if desired. Avoid lap marks by not painting in direct sunlight and by coating sections of the surface either down or across hull to natural breaks, maintaining a wet edge.

If your edge begins to dry or you see that you missed a spot and the primer is already setting up, allow it to dry completely before touching up that area.

Do not lather on primer too thickly or you will compromise all flexible adhesion characteristics that make TotalBoat Primer one of the industry's leading one-part undercoats. Dry Film Thickness (DFT) should be 1-2 mils.

Technical Information

Features

  • High-performance, one-part primer
  • Fast drying
  • Non-lifting
  • Lead and chromate free
  • Rust inhibitive

Thinning and Cleanup

  • Thinning (Brush/Roll Application): TotalBoat Special Brushing Thinner 100
  • Thinning (Spray Application): TotalBoat Spray Thinner 101
  • Cleanup: TotalBoat Special Brushing Thinner 100, TotalBoat Spray Thinner 101, or TotalBoat Dewaxer & Surface Prep

WARNING: This product can expose you to chemicals including titanium dioxide, ethylbenzene, silica crystalline, and cumene, which are known to the State of California to cause cancer, and n-methylpyrrolidone, which is known to the State of California to cause developmental toxicity. For more information, go to www.P65Warnings.ca.gov

Reviews for TotalBoat Topside Primer

10 of 116 Reviews

June 12, 2022

Best Genuine Primer Around!
By ModernGuy78 from New York City NY

Verified Purchase

I used this Primer, , on drawer- cabinet fronts of a mid-century Dresser. Dries fast..and super durable and Protective.. perfect for Pre- Painting almost anything! LR

Priming Drawers for Lacquer Paint.
Bottom Line Yes, I would recommend to a friend

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June 9, 2022

I would buy this product again
By TD from Portland Me

Verified Purchase

I used it as a primer for total wet edge

Bottom Line Yes, I would recommend to a friend

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May 19, 2022

Applied easily - even in the heat
By Tmac from Central Illinois

Verified Purchase

Product performed well - most importantly the technical advice I received in the purchasing process was spot on... thanks!

Final product
Bottom Line Yes, I would recommend to a friend

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May 13, 2022

yes i would buy again.
By microvincy from Elizabeth City, N.C.

Verified Purchase

my problem, not yours, I needed to pay attention to size/quantity of what I was buying. I did get what I asked for. Got it promptly.

Bottom Line Yes, I would recommend to a friend

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May 8, 2022

Easy to use and sand
By Mike from Chesapeake Bay

Verified Purchase

Be sure to mix thoroughly, this is thick! Helpful to fill in minor imperfections then sand before top coating.

Bottom Line Yes, I would recommend to a friend

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May 4, 2022

The primer never cured and I had to sand and wipe it off.
By Jeff from Connecticut

Verified Purchase

I like the other products I've purchased from Jamestown but I would not purchase this primer again.

Bottom Line No, I would not recommend to a friend

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April 17, 2022

Nice product that is easy to use and clean up.
By Mark T from Lanoka Harbour, NJ

Verified Purchase

I am preparing to do a complete topside paint job and wanted to do a small sample for experience. I laid up a 2x2 sheet of fiberglass, sanded and faired for the primer coat. The primer lays down in a thick even coat and was easy to sand before painting. It does cover the small imperfections that may have been missed from fairing. Great product and excited to get to the topside project.

Bottom Line Yes, I would recommend to a friend

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April 12, 2022

Mixed Results
By Dave from Wisconsin

Verified Purchase

This primer is a mixed blessing. On the one hand it goes on thick and so fills in minor defects. But it dries too fast and, if rolled, isn't smooth when done so you have a lot of sanding to do before top coat. And it sands harder than the automotive primers I switched to. All in all I would not purchase again. I'd use a high quality automotive primer.

Bottom Line No, I would not recommend to a friend

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April 8, 2022

Good stuff
By James from Daytona Beach

Verified Purchase

I like it and for that reason you should buy it too

Bottom Line Yes, I would recommend to a friend

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December 8, 2021

I will continue to use this product on future projects.
By Boat Fixer from Livingston, Tenn.

Verified Purchase

Great primer

Bottom Line Yes, I would recommend to a friend

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