Australia’s northern and eastern coastlines are divided into two 50 km-wide cyclone-prone strips—Region C (spanning the Northern Territory, most of Queensland and northern Western Australia) and Region D (from Eight Mile Beach down to Coral Bay). Within these zones, buildings receive a wind classification (C1 through C4) based on:

Local terrain: Open plains, coastal dunes or urban obstruction

Site exposure: Hillside locations versus sheltered valleys

Vegetation density: Sparse scrubland versus dense forest

Higher ratings (e.g. C4) correlate to more extreme peak gusts and demand robust reinforcement, whereas C1/C2 applications cover moderate cyclone-risk neighbourhoods.

 

Cyclone-rated fenestration must satisfy strict criteria for:

Structural Integrity: Sustaining design wind pressures without frame deflection or glass breakage.

Water Resistance: Preventing leakage under driving-rain simulations at high positive & negative pressures.

Air Infiltration: Minimizing drafts at extreme pressure differentials to guard against interior flooding.

Impact Tolerance (optional): Withstanding impact from wind-borne objects when laminated or impact-resistant glazing is specified.

 

To meet and exceed the rigorous requirements, Vigora employs:

Reinforced Aluminum Profiles

Extra-thick mullions and transoms

Integrated one-piece steel or composite stiffeners

Precision-welded corners for uniform strength

High-Performance Sealing Systems

Multi-lip EPDM gaskets at sashes and frames

Compression-fit weather seals to lock out wind and rain

Specialized Glazing Packages

Laminated safety glass with PVB interlayers for optional impact resistance

Dual- or triple-glazed units certified for water-penetration testing

Customizable air gaps filled with argon for added robustness

Purpose-Built Hardware

Heavy-duty rollers, hinges and shoot-bolt systems tested under cyclic loading

Corrosion-resistant finishes for salt-air environments

 

VIGORAWINDOWS’s cyclone-resistant products undergo independent laboratory testing in accordance with:

AS/NZS 4284 (Testing of fenestration assemblies)

AS/NZS 1170.2 (Structural design actions – Wind actions)

ASTM E330 & E547 (Uniform static air pressure and water penetration tests)

Detailed test reports are available for C1 through C4 classifications, simplifying compliance with local building authorities and insurance requirements.

 

 

Whether you’re spec’ing a beachfront holiday home, a coastal resort or an inland subdivision, VIGORAWINDOWS’s modular approach lets you:

Select the appropriate wind-load rating (C1–C4) for your site

Choose from sliding, awning, casement or bifold configurations

Integrate matching insect screens, shutters or external storm panels

Coordinate finishes and hardware to align with your architectural vision

 

 

Peace of Mind: Engineered to protect occupants and assets during severe weather.

Energy Synergy: Airtight construction enhances thermal performance year-round.

Aesthetic Consistency: Identical sightlines and frame profiles across both cyclone-rated and standard units.

Long-Term Value: Durable materials and proven designs reduce maintenance and replacement costs.

 

Email: seven@vigorawindows.com