Aluminium vs Galvalume Shutters: Which Is Right for You?

When choosing a rolling shutter, the most important decision is the material. Aluminium and galvalume are the two most popular choices in India — and the right answer depends entirely on where your property is, what you're securing, and how much maintenance you're willing to do.

After 40+ years of installing rolling shutters across India, here's our honest comparison.

What Is Galvalume?

Galvalume is a steel sheet coated with a zinc-aluminium-silicon alloy (typically 55% aluminium, 43.5% zinc, 1.5% silicon). It was developed specifically to outperform plain galvanized iron (GI) in harsh environments. In rolling shutters, galvalume provides:

• 2–4× better corrosion resistance than plain GI
• Excellent UV and heat reflectance
• Stronger structural rigidity per rupee than aluminium

What Is Aluminium Alloy Shutter?

Aluminium rolling shutters use extruded alloy 6063-T5 — a double-wall hollow slat profile. The aluminium is either anodized (self-protecting oxide layer) or powder-coated. Key characteristics:

• 50% lighter than galvalume/GI at the same width
• Zero rust — aluminium does not corrode in normal environments
• Available in any RAL colour with powder coating
• Quieter in operation (spring and motorized)

Head-to-Head Comparison

Feature	Aluminium	Galvalume
Corrosion Resistance	Excellent (no rust)	Very Good (2–4× better than GI)
Weight	Light (50% less than GI)	Medium
Slat Thickness / Grade	0.9mm – 1.2mm (Double-wall)	0.8mm – 1.2mm (Single-wall)
Estimated Cost	Higher (₹550 – ₹750/sq ft)	Lower (₹380 – ₹520/sq ft)
Max Width	Up to 18 ft	Up to 24 ft
Colour Options	Any RAL, anodized	Mill finish / painted
Best For	Retail, showrooms, homes	Warehouses, factories, coastal
Noise Level	Quieter	Slightly noisier
Maintenance	Zero maintenance	Minimal

"for 90% of retail shops, aluminium wins — quieter, zero maintenance, better looking. For warehouses and factories, galvalume wins on cost-per-sq-ft and span."

— Goyal Rolling Shutters, 40 years of installations

When to Choose Aluminium

Choose aluminium shutters when:

• Your opening is a retail shop, showroom, or modern commercial space
• Aesthetics matter — you want a specific colour or anodized finish
• The opening is up to 18 ft wide
• You need a motorized or smart shutter (aluminium runs quieter)
• The property is in an urban or residential area without heavy industrial exposure

When to Choose Galvalume

Choose galvalume shutters when:

• The property is a warehouse, godown, factory, or loading bay
• You need wide spans — 18 ft to 24 ft or more
• The environment is coastal, humid, or chemically exposed
• Budget is the primary constraint and finish colour doesn't matter
• You need perforated or insulated variants (commonly available in galvalume)

Can You Get Motorized in Both?

Yes — both aluminium and galvalume shutters can be motorized with the same AC tubular or chain drive motors. The motor choice depends on shutter weight and frequency of use, not the curtain material. See our motorized shutters page for details.

What About GI (Plain Galvanized Iron)?

Plain GI is still widely used for very large industrial openings where budget is critical. However, galvalume has largely replaced GI in quality installations because the cost difference is minimal (5–10%) and the performance difference is significant. We recommend galvalume over plain GI for all new installations.

Bottom Line

There is no single right answer — the best material depends on your use case. If you're unsure, our engineers visit your site free of charge and recommend the right product based on opening dimensions, environment, and budget. Call us on +91 99712 49043 or request a free site visit.