What Are the Dangers of Cutting a Galvanized Decking?

Zinc Oxide

• Galvanized steel's zinc coating turns into zinc oxide gas when it is exposed to high temperatures like those needed to cut the steel in the first place. This gas can be harmful to both the skin and the respiratory system. Too much exposure to zinc oxide can lead to a condition known as metal fume fever or the zinc shakes. Although not fatal, it can cause flu-like symptoms and incapacitate you for a short time, perhaps one or two days.

Heat

• The amount of heat required to cut galvanized steel is a danger in and of itself. Galvanized steel cutting exposes the body to unnaturally high temperatures for extended periods. This can lead to burns or significant damage to the skin and hair. Those planning to cut galvanized steel to install decking should take necessary safety precautions. Temperatures can exceed 900 degrees when cutting galvanized steel, so as much protective clothing as possible should be worn.

Side Effects

• Aside from the metal fume fever associated with the heating of zinc oxide, other side effects can occur as a result of exposure to zinc fumes and dust. The Occupational Health and Safety Administration notes that zinc oxide can cause pustular skin eruptions and contact dermatitis. Proper skin coverage is essential to avoiding the side effects associated with the effects of zinc dust.

Treatment

• Treatment of exposure to zinc oxide varies depending upon the length of the exposure and the severity of the symptoms. The fever, nausea and other flu-like symptoms associated with the metal fume fever will generally pass after about 48 hours with the proper amount of rest. Contact with the skin should be treated by flushing the skin with cold water. Clothes containing the element should also be removed immediately and cleaned thoroughly. Avoid eating, drinking or using tobacco immediately after skin exposure. This creates the further danger of ingestion.