Galvanized metal is most typically found on outdoor items or those likely to stay in contact with moisture or water, such as storage sheds, chain-link fences, and metal on boats. Galvanized metal is coated with a layer of zinc to protect the iron or steel underneath. If the item is exposed to continually wet conditions, the zinc develops a film known as white rust. Left untreated, white rust corrodes the zinc, and the metal underneath begins to rust, exhibiting the more traditional brownish-red color. To protect the integrity of the item, repair galvanized metal rust as soon as it is noticed.
Things You'll Need
- Wire brush
- Garden hose
- Protective gloves
- Safety goggles or glasses
- Naval Jelly
- Paint brush
- Zinc-rich paint
Apply vinegar to the rust. Pour some vinegar on a wire brush, then scrub the rusted area thoroughly.
Wash the area with a garden hose to neutralize the acids in the vinegar. Examine the area for stubborn rust stains.
Put on protective plastic or rubber gloves and safety goggles, then open the Naval Jelly. Add to water to make a solution that is about 95 percent water and 5 percent Naval Jelly. Mix thoroughly.
Paint the mixture onto the rusted areas. Allow to sit for 10 minutes, then immediately rinse the solution from the surface of the metal. Examine the surface for remaining rust. Repeat the Naval Jelly and water application until all rust is removed. Wash thoroughly and dry the panels once all rust is removed.
Apply a zinc-rich paint over the repaired area. Select a paint that matches the existing color of the metal as closely as possible. Allow to dry. Weathering will eventually match the color of the repaired area with the rest of the metal.
Tips & Warnings
- Naval Jelly can cause injury if touched or ingested. Always work with Naval Jelly outside or in a well-ventilated area. Lay a tarp or other covering down to prevent Naval Jelly from burning flooring.
- Photo Credit Jupiterimages/Photos.com/Getty Images
How to Remove Rust From Galvanized Steel
Galvanized steel is designed not to rust, so if you have a galvanized steel item that has rusted, it means that the...
How to Rust Galvanized Wire
Home designers and craftspeople sometimes rust galvanized steel on purpose to give it an aged, antique look. If you want to rust...
How to Fix a Hole in a Galvanized Tin Roof
To create a long-lasting watertight repair on a galvanized tin roof, you need to use galvanized metal and a sealant that does...
How to Repair a Galvanized Metal Roof
Although galvanized metal roofing has an average life expectancy of 50 years, weather and objects can cause the metal roof to leak....
How to Clean White Rust on a Metal Roof
Galvanized metal is a popular roofing material due to its low maintenance and upkeep requirements, relatively easy installation and long life. A...
How to Paint Rusted Galvanized Metal
Galvanized metal is steel coated with a thin layer of zinc oxide. Galvanized steel or metal is a common building material. The...
How to Fix a Rusted Galvanized Flue
If you have a galvanized metal fireplace flue with corrosion or rust, rather than replacing the entire flue, you can repair it....
How to Make Galvanized Metal Look Old
New galvanized metal appears too clean and sometimes shiny -- exactly the opposite of what's suitable for country or rustic decorating projects....
Uses of Naval Jelly
Phosphoric acid in gel form is known as naval jelly, and the product has a variety of applications. Always use caution when...