Marine paints are specially designed for their interaction with the materials of a boat as well as constant contact with water. As there are different kinds of paints for marine use, it's important to know the contents of the paint and the substance being painted. Paint color can also be significant, depending on the purpose of the boat.
Metals in certain marine paints will have negative chemical reactions with other metals. Some boat hulls are made of aluminum, and using paints with copper in them will at the very least cause the metals to corrode. Do not let the copper paint directly touch the aluminum. First clean the surface of the hull and then sandblast the aluminum.
Proceed with at least three coatings of a primer that is specially designed for the bottom of boats. After the primer has dried, use up to three coatings of marine paints for the finish. Aluminum marine paint may be a better option if sandblasting is not available, but be sure to consult an expert before using metal paints.
Interlux marine paint is convenient for those who want to keep their boat clean without all the extra work. Algae, grass and seaweed naturally build up beneath the boat. Anti-fouling agents such as the ones carried by Interlux marine paints repel these buildups and protect the bottom of the boat for longer periods of time than regular marine paints.
The color of the paint can be important as well. Camouflage marine paints are ideal for military and hunting boats. Camouflage colors are typically dark shades of green, black and brown, and are available through most marine paints suppliers.
Metal-coated marine paints may also come in camouflage colors. Though they're designed not to cause rust, buyers should be careful not to mix dissimilar metals together, as noted above. However, dissimilar metals may not cause a reaction until water is mixed into the equation. Marine paints suppliers will know which combinations to avoid.