Anti-Rust Corrugated Zinc: Myth or Fact?

Corrugated iron has long been the primary choice for roofing various types of buildings—from warehouses to residential homes. One frequently heard claim is that corrugated iron is rust-resistant. But is it true that corrugated iron doesn't rust? Let's examine the facts.

What is Corrugated Iron?
Corrugated iron is a corrugated metal sheet, generally made from mild steel or thin iron, coated with a protective material such as zinc or an aluminum-zinc alloy (galvalume). This coating helps resist rust.

Fact: Corrugated Iron Is Not 100% Rust-Resistant
In fact, all types of metal can corrode, including corrugated iron. The only difference is its resistance to rust. When properly installed and maintained, corrugated iron—especially those coated with galvalume or galvalume—is much more rust-resistant than regular metal sheets.

However, rust can still appear if:

The surface is scratched and the protective coating is damaged

Exposure to sea air (high salt content) without additional coating

High humidity and poor ventilation

Improper installation process, such as using nails without rubber washers

Tips to Prevent Zinc from Rusting Quickly
Use guaranteed products that include a quality galvanized/galvalum coating.

Install correctly, from the roof slope, overlap between sheets, to selecting screws with washers.

Avoid scratching the surface during cutting or installation.

Repaint if the zinc looks dull or has open scratches.

Get Quality Anti-Rust Corrugated Zinc
PT Intisumber Bajasakti supplies galvanized and galvalum corrugated zinc with standard thicknesses and high rust resistance. Suitable for roofing, fencing, and wall projects in industrial and residential buildings.

📞 Contact us at: +6221 66675999
🌐 Visit our website: www.intisumberbajasakti.com

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