• Buildings within the scope of NZ3604
• Wind zone — Extra High
• Earthquake zone — High
• Corrosion Exposure zone — D

• Minimum roof pitch: 12° 
• Specific design can allow higher wind speeds — batten rafter connections are the limitation

This system if designed, used, installed and maintained in accordance with the supporting technical information and additional conditions and limitations will meet the following provisions of the New Zealand Building Code:

• B1 Structure
• B2 Durability
• E1 Surface Water
• E2 External Moisture

Since its inception in 1957 Gerard's pressed steel roofing has been used on over 1 million roofs in 127 countries around the world.

• Manufactured in accordance with ISO 14001, and ISO 9011
• Guaranteed for up to 30 years