Guide to Choosing the Right Thickness of Corrugated Iron for Building Roofs

The choice of roofing material is a crucial decision in the construction process. One frequently used material is corrugated iron, known for its strength, ease of installation, and affordability compared to other alternatives. However, many people don't understand that the thickness of corrugated iron significantly impacts the strength, lifespan, and safety of a building.

To achieve optimal construction results, the correct thickness must be selected based on the needs and environmental conditions. Here's a complete guide.

Why is Corrugated Iron Thickness Important?
The thickness of the zinc directly affects:

• Resistance to wind and rain loads
• Resistance to rust and corrosion
• Impact resistance
• The lifespan of the roofing material

The thicker the zinc, the stronger and more durable it is, but the price will also be higher. The choice must be tailored to the location and type of building.

Common Corrugated Iron Thickness Options on the Market

Thickness	Recommended Application
0.20 – 0.25 mm	Temporary structures, kiosks, fast projects, light warehouses
0.30 – 0.35 mm	Minimalist houses, shop-houses, small commercial buildings
0.40 – 0.45 mm	Factories, warehouses, multi-story buildings, high-wind areas
≥ 0.50 mm	Wide-span roofs, heavy industrial projects, coastal areas

Important Considerations Before Purchasing

1. Project Location
   Coastal areas require greater thickness due to higher exposure to corrosion.
2. Aesthetics and Appearance
   The thicker the corrugated iron, the less likely the surface is to dent or warp.
3. Project Budget
   Adjust to your needs and budget to maintain efficiency.
4. Frame Structure Type
   Strong frames (e.g., WF steel) can support greater thicknesses for long spans.
5. SNI Warranty & Quality
   Prioritize products that meet national standards and are guaranteed quality.

Recommended Thickness for Residential Homes
As a general guide:

• Houses in urban areas: 0.30 – 0.35 mm
• Houses in areas with strong winds/highlands: 0.40 mm
• Buildings near the coast: ≥ 0.45 mm (better corrosion resistance)

Conclusion
Choosing corrugated iron thickness isn't just about price, but also about strength, safety, and the building's lifespan. Understand the project's needs, the surrounding environment, and supporting materials before making a decision. With the right combination, construction costs can be more efficient while providing long-lasting results.

If you need a consultation or want to purchase high-quality corrugated iron with an SNI guarantee, our team is ready to help.

Contact Us
PT Intisumber Bajasakti – Trusted Distributor of Steel & Construction Materials

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

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