The Cost Crossover Point: BAL-FZ Windows vs. BAL-FZ Shutters

The fundamental principle is that the total cost of a BAL-FZ window is a single, high price point that increases with size. The total cost of a BAL-FZ shutter + standard window is the sum of two separate products. The price of the standard window is relatively low, while the price of the shutter is also high but generally less than a BAL-FZ window of the same size.

This creates a crossover point, usually at a smaller window size (<1.5 sqms), where the all-in-one BAL-FZ window may be more economical. However, as the window size increases, the per-square-meter cost of the BAL-FZ window escalates faster than the combined cost of the standard window and BAL-FZ shutter.

1: BAL-FZ Windows

BAL-FZ windows start at a very high price for even the smallest window and rises steeply. The cost per square meter is significant, often quoted in the range of $3,000+ per sqm. This is due to the specialized materials (e.g., fire rated frames, fire-resistant glazing), complex manufacturing processes, and rigorous testing and certification required for a single, integrated product.

2: Standard Windows + BAL-FZ Shutters

Standard Window + BAL-FZ Shutte start with the base cost of a standard, non-BAL rated window (a few hundred dollars for a small window), plus the cost of the shutter. The shutter itself typically starts from $2,000 per shutter and increase by $1,100 – $1,600 per sqm, plus the cost of the motor and installation.

The Crossover Point

The two products cost would intersect at a specific window size, which is typically in the range of 1.5 to 2.4 square meters.

• Operable Windows Below 1.5 sqms OR Fixed Windows below 2.4 sqms: For small operable windows and fixed windows (e.g., toilet, laundry, bedroom, hallway, kitchen backslash, highlight windows etc), the cost of manufacturing and certifying a single BAL-FZ window might be comparable to or even less than the combined cost of a separate standard window and a BAL-FZ shutter. The cost efficiencies of mass-produced components in shutters have less of an impact at this size.
• Above 2.4 sqms: As the window size increases, the exponential cost of the specialized materials and construction for a BAL-FZ window becomes prohibitive. The shutter solution becomes significantly more cost-effective. The per-square-meter cost of the shutter, while high, is generally less than the premium for a BAL-FZ window, and the cost of the standard window behind it is relatively low.

Customer Takeaway

I hope his guide helps to explain a simple but critical piece of financial advice for customers building in a Flame Zone:

“For smaller operable windows or fixed windows, the cost difference may be negligible, making a single, all-in-one BAL-FZ window a cleaner and more aesthetically pleasing option. For large windows or sliding doors, the combination of a standard window and a BAL-FZ rated roller shutter could be the most economical solution for achieving BAL-FZ compliance.“

It’s crucial to understand that this is a general guide. Final costs depend on specific products, suppliers, installation complexity, and the unique design of the project. Always obtain detailed quotes from certified providers for a precise cost comparison.