Get Free Shipping on your order now! Don't miss out!

This item is eligible for free shipping

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

Video thumbnail

Reviews

Rating Snapshot

Select a row below to filter reviews.
74 reviews with 5 stars.
37 reviews with 4 stars.
9 reviews with 3 stars.
15 reviews with 2 stars.
17 reviews with 1 star.

Overall Rating

3.9

Review this Product

Select to rate the item with 1 star. This action will open submission form.
Select to rate the item with 2 stars. This action will open submission form.
Select to rate the item with 3 stars. This action will open submission form.
Select to rate the item with 4 stars. This action will open submission form.
Select to rate the item with 5 stars. This action will open submission form.
Adding a review will require a valid email for verification

Filter Reviews

1 to 10 of 152 Reviews
1 – 10 of 152 Reviews
oregon
1 out of 5 stars.

i would not buy this product again

4 months ago
I laid down the first coat on mostly bare wood, (restoration project built in 1962 and was unsure if the old paint would be compatible with the new, so i sanded 95% of the old stuff off). Thined the primer 5-10 % with their brushing lacqure thinner and it went on great. I Waited 24 hours and sanded with 220 grit paper and it sanded great. I then wiped it down with their dewaxwer and surface prep. I was concerned as I noticed this surface prep was softning the first coat some and sticking to my dampend (NOT WET) cloth. I let dry a couple more hours and attempted to apply a second coat as I could still see the grain of the plywood under the first coat. The second coat unthinned was thick and would not flow (inside shop conditions were 75 -80 degrees F) and it was leaving big globs where the brush strokes ended in attempts to maintain the wet edge, so I was forced once again to thin it. I could not find a happy medium, as too thick it would glob, and adding thinner would just loosen the first coat undernieth, so now I had saggs and runs. Now it would not cure and it was unsandable. It gummed up 100 grit sandpaper for 4 days! On the fifth day (80 F with fans running) it finally set up enough to sand out the sags and runs with 100 grit paper. Waited another 24 hrs to sand with 150 grit......then Another 24 hours to sand with 220. Heck, I'm almost back to bare plywood and my fingers are sore and bleeding from all the sanding. I'm going on two weeks into this project in a controlled environment and haven't even got past the primer, sheesh. I'm very frustrated and not sure what i'm going to do. On a more positive note, I have had good luck with Total Boat products in the past, most noteably their Krypton bottom paint, I love that stuff. But this ones really got me scratching my head. I wish i were more computer savy (71 yo). I have pictures but not smart enough to get them from phone to computer.
Helpful?
Texas
1 out of 5 stars.

Dented cans!

4 months ago
The cans were so dented that I cant have them shaken and can hardly open then. I'm really surprised they were not leaking in the box. Can't blame the shipping company because the boxes they were in were not damaged at all. I don't think I'll be using Total Boat products again. Just hope I can get this project finished.
Helpful?
Alabama.
4 out of 5 stars.

Very fast drying.

11 months ago
If you are inexperienced with fast drying alkyd paint, you should practice on some scrap before using this on your project. It dries so fast that you really can back up over what you just did with a roller or brush. I cut it 5% and that is so thin I would not want to thin it further as it would drip. This primer really cuts into previous paint layer and bonds like no other. If I needed a very smooth car type finish, I would consider spraying this and not roll and tip. I didn't care is it was going on a pontoon boat over a bunch of crappy texture. Worked great.
Helpful?
Raleigh nc
5 out of 5 stars.

Great product!

11 months ago
I would recommend this product to all boat owners.
Helpful?
Long Island
5 out of 5 stars.

I would buy again

11 months ago
Great primer on surfaces in good condition. Used it as a primer for Wet Edge & Total Tread. Fast drying/ strong odor must use with good ventilation.
Helpful?
Chicago IL
4 out of 5 stars.

Dries fast

a year ago
Follow directions. The coat must be thin. It dries very quickly so work tiny areas. No need to tip off. That is nearly impossible anyway because it dries so fast. Smoothing over just adds more (too much) paint and texture. Thin coats work great.
Helpful?
Hot Springs Village, Arkansas
5 out of 5 stars.

Easy

a year ago
This primer appears to have worked great. Proof will come over the next few years during use, but a good start. As a side note, I used a combination of Wet Edge and Halcyon clear varnish (9 coats all in) over the rest of my outdoor cabinet with stellar results. That cabinet has been in the back of my pick up through sun, rain and snow for a couple years with no failure. The cap that I refinished protects my battery, associated electronics and refrigerator – it needs be watertight to keep things dry. My project was re-coating an outdoor cabinet top that sits in the back of my pickup. After sanding and scraping, the substrate was a combination of bare wood, paint, TotalBoat Wet Edge and Halcyon varnish. Definitely needed a primer. This product was sticky yet easy to use. I thinned close to 10% with TotalBoat brush thinner. Applied two coats with a brush. The primer went on evenly and provided a good base for the five coats of wet edge I applied on top. The end product looks great. Hope it will last a few years.
Helpful?
Sparta, NJ
4 out of 5 stars.

Good primer

a year ago
Easy to use, but next project I'll probably go with the 2 part epoxy primer.
Helpful?
Palmetto, FL
5 out of 5 stars.

Great product

a year ago
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.
Helpful?
New Jersey
5 out of 5 stars.

My fore deck is a bomb shelter.

a year ago
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.
Helpful?
1 – 10 of 152 Reviews

Questions

1 - 10 of 80 Questions

Q: null Can this primer be covered with waterbased paint

7 months ago
1 Answer

A: The answer is probably yes but that's really a question for the manufacturer of the water based paint. They will have specific recommendations for prepping the substrate for their product.

7 months ago
Helpful?

Q: null If this primer (TotalBoat Topside Primer) is recommended for above the waterline, why to you show a video of the painter applying the primer to the hull?

11 months ago
1 Answer

A: Hi there. Thanks for reaching out. The boat shown in this video will be trailered and will not spend long amounts of time in the water. You can use this primer below the water line if the boat will not be stored in the water for more than 24 hours at a time.

11 months ago
Helpful?

Q: null Can I apply 2-part alexseal topside paint over this product? If not can I apply the alexseal primer over the sanded total boat Topside primer that is already on my boat (I stripped the previous paint)?

a year ago
2 Answers

A: Alexseal is a two part paint. Generally it is not recommended to apply a two part paint over a single part primer because the solvents in the two part can cause the single part primer to blister.

a year ago
Helpful?

Q: null It has been 24 hours since application and I cannot sand it off. It is gumming up all of my sand paper regardless of hand or machine sanding and regardless of grit. Now what?! I'm panicking because the texture marks are obvious and look terrible. Paint won't hide it. Does anyone have ideas on what I can do?

a year ago
2 Answers

A: Very similar results. I used to recommend TopSide and Wet Edge, but it's just unpredictable. The help desk says, well, it's touchy. That doesn't help when I'm waiting 4 days for the paint to dry after having followed instructions. So done with this product.

Anonymousa year ago
Helpful?

Q: null I am planning to change to a red stripe on a fiberglass sailboat to flag blue. Would this primer work to cover the red, then sand and apply flag blue?

a year ago
1 Answer

A: Yes.

a year ago
Helpful?

Q: null totalboat primer says not for below waterline... but the video shows using it on complete dinghy hull, which is what i was planning... using totalboat Wet Edge for top coat... is there a better choice for primer? dinghy is fiberglass and will sit in water all summer.. will apply bottom paint as well

4 years ago
2 Answers

A: The problem with this answer is IF you want to add total protect below water line don't you have to completely strip off any old paint if it is ONE part? Clarity on what total protect adheres to would be very helpful.

Anonymousa year ago
Helpful?

Q: null Plan to prime a non skid deck and then apply Wet edge topside. Does the primer absolutely need to be sanded prior to top coat, or is there another option you know of?

2 years ago
1 Answer

A: In order to get good adhesion of the topcoat to the primer it does need at least a light scuff sanding with 220 grit or a scotch brite pad.

2 years ago
Helpful?

Q: null Since the Topside Primer (TB-PrimeWG-K) is for use with one and two part topside finishes can Quantum 99 topcoat be applied over it?

2 years ago
1 Answer

A: I would only use the primer recommended by Quantum.

2 years ago
Helpful?

Q: null Can I use this primer for both the top and bottom? Plan to use Perfection on the bottom and Wet Edge on top

2 years ago
3 Answers

A: Do not think it is designed for bottom - any scratches on paint and I think you will be wishing you used a two part epoxy under the water line.

2 years ago
Helpful?

Q: null Can Total boat topside primer be used over total fair and also can i put it over Imron paint on my deck i had to fix a few spots

2 years ago
1 Answer

A: The answer is yes to both questions. Here's a link to the directions: https://doc.jamestowndistributors.com/userportal/pdfs/TotalBoat/totalboat-topside-primer-tds-2.25.22.pdf

2 years ago
Helpful?
1 - 10 of 80 Questions
Error