Bondek vs. Conventional Corrugated Roofing: Which is More Economical?

In modern construction, the choice of floor casting method is a crucial factor influencing the cost efficiency and timeframe of a project. Two commonly used systems are bondek and conventional casting. Both serve the same primary function: creating a strong concrete floor, but there are significant differences in terms of method, cost, and final results.

What is Bondek?
Bondek is a corrugated steel sheet that functions as both permanent formwork and sub-floor reinforcement for concrete floors. This system is often used in high-rise building projects because it is practical, fast, and efficient. Bondek is also known as metal deck or steel deck.

What is Conventional Casting?
Conventional casting is a traditional casting method that uses wooden or plywood formwork and manual iron reinforcement. Once the concrete hardens, the formwork must be removed and reused for casting other sections.

Comparison of Bondek vs. Conventional Casting

Aspect	Bondek	Conventional Concrete
Initial Cost	Slightly higher due to galvanized steel material	Lower because it uses wood or plywood
Time Efficiency	Faster, no need to dismantle or reinstall formwork	Slower due to installation and removal of formwork
Labor	Requires less labor, simpler installation	Requires more workers
Structural Strength	Stronger and more even, capable of supporting heavy loads	Strong, but depends on casting and reinforcement quality
Durability	Long-lasting, rust-resistant, and low maintenance	Formwork may get damaged and is less durable
Ceiling Aesthetic	Underside looks neat and can be left exposed	Underside is rough, needs additional plastering

Which is More Economical?
In terms of long-term costs, Bondek is more economical and efficient because:

No additional costs for dismantling formwork.

Saves project time.

The resulting structure is stronger and more durable.

However, for small-scale projects such as single-story houses, conventional cast iron can still be an economical option if wood is readily available and labor is available.

Conclusion
Bondek offers high efficiency, better strength, and a neat appearance, making it suitable for multi-story buildings, shophouses, or commercial buildings.
Meanwhile, conventional cast iron is still relevant for building simple houses on a limited budget.

For your bondek, reinforcing steel, and quality construction materials, trust PT Intisumber Bajasakti (ISBS) — a trusted steel distributor certified by ISO 9001:2015 and with SNI-compliant products.

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

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