Steps to Install Corrugated Iron to Prevent Leaks

Corrugated iron is one of the most widely used types of roofing, especially for industrial buildings, warehouses, and even residential homes. However, many leaks occur not due to poor quality zinc, but rather due to installation errors. To ensure a durable and leak-free roof, follow these installation steps.

1. Choose Quality Zinc and the Right Fit for Your Needs
Use galvanized or galvalume corrugated iron with a minimum thickness of 0.25 mm to withstand extreme weather. Also, ensure the size matches the length of the roof span to minimize joints.

2. Prepare a Flat and Sturdy Roof Frame
Before installation, ensure the hollow iron or lightweight steel roof frame is properly installed and not warped. An uneven surface can cause gaps between the zinc joints.

3. Install the Zinc from the Correct Direction
Start installation from the bottom up and from the direction opposite the dominant wind direction to prevent rainwater from easily entering the joints.

4. Use Special Roofing Screws with Rubber Washers
Use roofing screws equipped with rubber washers to prevent water from entering through the screw holes. The ideal screw spacing is 20–30 cm per sheet, especially at joints and ends.

5. Stack the Zinc Sheet with Sufficient Overlap
Allow a horizontal overlap of at least 1 wave and a vertical overlap of at least 20 cm between sheets of corrugated iron. Avoid overlapping sheets too short, as this can allow water to seep in during heavy rain.

6. Add Sealant to Leak-Prone Areas
For joints or junctions between the zinc sheet and the wall, apply a waterproof sealant or aluminum flashing to seal gaps and strengthen wind resistance.

7. Re-Inspect After Installation
Re-inspect all joints, screws, and the roof slope. Ensure there are no open gaps that could potentially become leaks.

Need High-Quality, Durable Corrugated Zinc Sheets?
PT Intisumber Bajasakti supplies galvanized and galvalum corrugated iron sheets in various thicknesses and sizes. We also offer custom-cutting services and fast delivery for your project.

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