What is topside paint?

Last Update: April 20, 2022

This is a question our experts keep getting from time to time. Now, we have got the complete detailed explanation and answer for everyone, who is interested!

Asked by: Libby Mraz Sr.
Score: 4.4/5 (20 votes)

A topside paint is any paint you apply above the waterline anywhere on your boat. This includes the sides of the hull, deck, and interiors. Marine topside paints are commonly one of the following types: one-part polyurethane, two-part polyurethane, and alkyd marine enamel.

What is topside paint used for?

About Topside Paint

Rust-Oleum® Marine Coatings Topside Paint provides gloss retention and UV resistance in extreme weather conditions. Apply to fiberglass, wood or metal surfaces above the waterline. Flexible formula is easy to apply.

What kind of paint is rustoleum topside?

Rust-Oleum Marine Coatings Topside Paint is an oil-based modified alkyd. This easy to apply coating provides long-lasting protection and a brilliant glossy finish on fiberglass, wood or metal. Use above the waterline only.

Can I use topside paint on the bottom of my boat?

If the bottom of a watercraft doesn't require anti-fouling properties, then we can use topside paint on the bottom of a hull. These paints provide excellent water and abrasion resistance. ... In short, topside paints can be used on the bottom of a boat, but bottom paints cannot be used topside.

How long does topside paint last?

In general, you should apply boat bottom paint once a year, however; some bottom paints can last for two years. If your boat is kept in the water or you use it regularly, you you have it checked annually to determine if it requires a new bottom paint coating.

Buyer's Guide to Topside Paint

19 related questions found

How many coats of topside paint do I need?

If surface smoothing is desired, use Pettit's 6149 EZ Prime over the 6455 Metal Primer. topside finishes should be applied with no greater than 3/16” nap roller. coats of Easypoxy, EZ Poxy or EZ Decks should I apply? We recommend at least 2 coats of all three products to be applied over existing finishes.

What is two-part paint?

Two-component paints (also referred to as 2K paints) are paints in which a chemical reaction results in paint hardening. ... Two-component paints consist of a base paint and a hardener. These two components must be mixed vigorously in the correct ratio and then applied quickly.

What is the difference between topside and bottom paint?

Topside paints are meant to be used above the waterline and will not hold up under water. Bottom Paints (also called antifoulants or antifouling coatings) are pesticides that are only used below the waterline when you are trying to stop growth from occurring while your boat stays in the water over long periods of time.

Can topside paint be used below waterline?

Most topside coating systems if constantly immersed or kept wet will tend to blister. Provided the boat is only put into the water for a few days then a topside coating can be used below the waterline.

Why do boats need bottom paint?

What Is Bottom Paint, Anyway? Bottom paint (aka antifouling paint) is a paint or coating designed to discourage weeds, barnacles, and other aquatic organisms from attaching themselves to (and in the case of wooden boats, eating) the underwater portion of your boat's hull.

Is topside paint oil based?

Rust-Oleum Marine Coatings Topside Paint White Gloss Enamel Oil-Based Marine Paint (1-Quart) in the Marine Paint department at Lowes.com.

Can topside paint be sprayed?

Topside Boat Paint

These paints are specifically designed to withstand different elements over time. ... One-Part Polyurethane Paint: Harder than enamel paint, this paint has a glossy finish and a reputation for being easy to apply. A roller, brush or spray will work to add this paint to your boat.

What is the best paint for a deck?

The best overall deck paint is Behr Premium Advanced Deckover (view at Home Depot). It makes your wood splinter proof, is easy to clean, and comes in 50 colors. If you prefer a budget-friendly option, KILZ Interior/Exterior Patio Latex Floor Paint (view at Amazon) is long-lasting, mildew-resistant, and user friendly.

What is marine grade paint?

Marine paint and coatings are waterproof, protective layers that are applied to surfaces exposed to or immersed in fresh, brackish, and saltwater. They are used with boats, ships, yachts, ferries, and other watercraft and marine platforms such as offshore oil rigs.

What is the best paint for a fiberglass boat?

The best paints available, in terms of durability and gloss retention, are the two-part polyurethane type paints. These paints are very thin, requiring multiple coats. However, they chemically harden to a very durable finish that will last for many years.

What does uncured paint mean?

It is, however, not fully dry. Meaning there are more layers under the top layer of paint that have yet to dry. This means the paint can still be easily damaged by scratches and hard use of the item.

Is bottom paint necessary in freshwater?

Many people have asked me if it is really necessary to paint the bottom of boats used exclusively in freshwater. The answer is simple; if you leave it in the water for the season, yes, paint it. Your boat may not accumulate barnacles, but boats left in freshwater can grow a healthy beard of plant and algae slime.

How much does marine paint cost?

A high-quality marine paint may cost around $70 per gallon, so if you've got to buy 5 gallons to do all your coats on your boat, you could be spending upwards of $350 on paint for your boat.

What kind of paint is used on boats?

Single-Part Polyurethane Paints – Urethane paints are also easy to apply, don't cost nearly as much as two-part polyurethanes, and have a long-lasting gloss. Two-Part Polyurethane Paints – These undisputedly look best and last longest. Many people would even argue they can out-shine a boat's original gel coat.

Can you paint over gelcoat?

If the gelcoat is in good condition with no major cracking or crazing, the job is relatively straightforward—clean and prepare the surface, apply an epoxy primer, sand the primer, remove the sanding residue and then apply the topcoat.

What is the best way to paint an aluminum boat?

Here are the steps to follow:
  1. Dry dock your boat. Pull your boat out of the water and prep a work area in a garage or a place where you have plenty of space. ...
  2. Sand off loose paint and rust. ...
  3. Wash the boat. ...
  4. Rinse the boat. ...
  5. Use aluminum boat polish. ...
  6. Applying the polish. ...
  7. Work in small sections. ...
  8. Check the boat.

What is 1K paint?

1K (or 1 Pack) is a term used to describe a paint coating that does not require any hardener, catalyst or activator to cure. This term can be used to describe paints that dry in the air (ideally at room temperature) and nearly all aerosol spray can paints.

What is 1K basecoat?

1K color base coat is one component color base coat, 2K color base coat is two-component color base coat. ... The touch up color prepared with 1K color base coat is used for primer or paint layer, which is the first process of automobile paint repair two-step process. After drying, it should be covered with 2K clear coat.

What is a 2K finish?

It's an alkyd varnish or water-based dispersion in which some isocyanate (a primary chemical in polyurethane) has been woven into the molecular structure. ... Unlike catalyzed finishes, which consist of the finish and an acid catalyst that doesn't add solids to the film, both parts in 2K polyurethanes add solids.