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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.
| 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 | 1° |
| Solids (by weight) | 61-64 % |
| Solids (by volume) | 42-45 % |
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
October 5, 2023
Verified Purchase
Easy to use, but next project I'll probably go with the 2 part epoxy primer.
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May 29, 2023
Verified Purchase
Removed lower deck teak on a 1989 Grand Banks. Sanded black butyl off with 80 grit. Filled pulled up gelcoat with TotalBoat fairing compound, and sanding to 150, then applied Topside Primer. Used two coats because we had some hairline cracks and random low spots I missed. Was great at filling in and smoothing surface. The final topcoat was TotalTread. The Primer and the TotalTread were both applied with a red 4" mohair roller. Everything went on smooth and easy. The hardest part was the taping. Very happy with product(s) and results.
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May 26, 2023
Verified Purchase
My fore deck was in danger of collapsing because of water intrusion. First time with epoxy, total boat made it easy. Everything worked the way it was supposed to. The boat is better now than new.
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May 17, 2023
Verified Purchase
Topside primer is unusually thick right out of the can. I didn't thin it because I wanted to take advantage of it's alleged 'high build' characteristic. It sands fairly easily but not quite as easily as other primers I've used. It dries fast. As suggested in other reviews, applying multiple thin coats is better than one thick coat.
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April 21, 2023
Verified Purchase
The primer was clumpy and it took a while to mix up,when I rolled it on it did not cover the fairing compound or other imperfections,I've used this product before on my other boat it worked fine,anyway I gave up and just painted over it.
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March 24, 2023
Verified Purchase
Deftly thin as recommend. Sets up quite fast. Sands nice.
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January 4, 2023
Verified Purchase
I wish the label was correctly oriented. It dries a little too fast and leaves brush strokes. I like that is fills small cracks.
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December 5, 2022
Verified Purchase
The thinned primer left heavy brushed texture . The primer when dry was gummy and unsandable.
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December 4, 2022
Verified Purchase
Oh and all the product worked exactly as it should've done. I used it over MDF and applied the wet edge topcoat. I think my only issue was I applied to thick instead of Wheaton the minimum amount of time as described on the Ken I had to wait 24 hours for it to dry appropriately.
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November 5, 2022
Verified Purchase
I used the product as the setup for a two-coat application of Wet Edge Topcoat Paint. This primer was very easy to use, and it appeared to be a nice setup for the Wet Edge. I applied it as the primer coat on a fiberglass repair project. The Wet Edge Topcoat paint that went over the primer coat achieved an excellent finish and appearance.
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