Painting Galvanized Steel

I have galvanized steel railings that were painted a few years ago with two coats of epoxy paint.

Painting galvanized steel.

Now it is peeling off in large chunks. The reasons for these paint failures are easy to explain and easy to avoid. One of its major drawbacks however is its susceptibility to corrosion luckily properly cleaning and painting galvanized steel will keep the metal from wearing down. If you have a kitchen then you probably already have this handy solution.

Galvanized steel is one of the most durable metals on the market and is used for everything from industrial structures to playground swing sets. Despite the fact that this preparation process has been available for some considerable time t wash is still generally considered to be the best pre treatment method for painting galvanized steel. In outdoor and some indoor exposure conditions galvanized steel will form a loose coating of zinc oxide on its surface. Many people have applied paint over a galvanized surface only to see it peel off within months.

However when specified protective coatings can be successfully applied for enhanced barrier protection and aesthetic needs. Painting galvanized steel is a quick and inexpensive project that anyone can tackle themselves it only requires a little bit of paint and primer and a few hours of labor most of which is drying time. Directions for painting galvanized metal properly much of the galvanized steel installed in the environment is left uncoated. Galvanized steel is less prone to rust since it has a special zinc coating which needs to be thoroughly cleaned and roughened so that the primer paint will adhere to it properly.

I can t seem to get a definitive answer from the. For best results the galvanized steel should be permitted to weather or age in the field. Galvanized steel also requires special surface treatments before painting. An advantage of painting over hot dip galvanized rather than bare steel is that no underfilm creep occurs as illustrated below.

T wash is a modified zinc phosphate solution which contains a small amount of copper salts. The secret to painting galvanized steel is white vinegar. That s great for preventing rust but it also prevents solid paint adhesion. Galvanized steel is coated with a thin layer of oil and passivator that protects it from water and weather damage.