How to Care for Corrugated Iron So It Doesn't Rust and Stays Strong for Years

Corrugated zinc is one of the most popular roofing materials for homes, warehouses, and industrial projects. Its advantages, such as easy installation, affordability, and weather resistance, make it a popular choice.
However, without proper maintenance, corrugated zinc can corrode (rust), causing leaks, brittleness, and even requiring replacement much sooner than its ideal lifespan.

To ensure longevity and longevity, here are some tips for caring for corrugated zinc that you should pay attention to.

1. Clean the Roof Regularly
Accumulated dust, moss, and dry leaves can trap moisture and accelerate the corrosion process.

Proper cleaning method:

• Use low-pressure water
• Soft brush (do not use a coarse wire)
• Clean at least every 3–6 months

Avoid climbing onto the roof without proper footwear, as this can damage the zinc coating surface.

2. Check Connections and Bolts Regularly
Loose bolts allow water to easily seep in, causing rust from within.

Solution:

• Tighten bolts if loose.
• Replace worn rubber washers.

Use special roof bolts that are rust-resistant (EPDM rubber washers).

3. Avoid Direct Contact with Corrosive Materials.
Zinc contact with wet cement, sea sand, coastal salt air, or rusty iron can accelerate the chemical reaction that causes rust.

Additional tip:
For coastal areas or heavy industrial areas, choose galvalume or zincalume zinc because they are more corrosion-resistant.

4. Use Anti-Rust Protective Paint. Protective paint can extend the life of zinc by several years.

Ideal painting time:

• Every 2–3 years.
• Use primer and topcoat.

In addition to protecting against water and heat, the paint color also helps reduce room heat.

5. Ensure Adequate Roof Slope.
A roof that is too flat allows water to pool and accelerate damage.

Recommended ideal slope:
A minimum of 10–15° to ensure smooth water drainage.

6. Repair Rusty Areas Early
If small rust spots appear, repair them immediately:

Simple treatment:

• Rub lightly with fine sandpaper
• Clean off rust dust
• Apply anti-rust paint + finishing paint

Ignoring small rust spots can lead to large holes in a matter of months.

Conclusion
Proper corrugated iron maintenance will make your roof:

• More durable
• Resists rusting quickly
• Remains strong for years
• Reduces repair and replacement costs

The key is regular cleaning, checking joints, repainting, and choosing the right protective materials.

Need Quality Corrugated Iron for Your Project?
PT Intisumber Bajasakti provides a wide selection of corrugated iron, galvalum, and metal roofing in a complete range of sizes and meets the highest quality standards for construction.

📞 Phone: 021-66675999
🌐 Web: intisumberbajasakti.com
✉️ Email: info@intisumberbajasakti.com

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