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Connect with a sales repChoosing a roof system for your climate
IECC climate zones
The IECC sets efficiency standards for new structures based on nationwide climate zones. Requirements change according to how far north or south the structure is, and zones generally align with county lines for ease of compliance.
Figure R301.1, Climate Zones, is excerpted from the 2021 International Energy ConservationCode. Copyright © 2021. International Code Council, Inc. All rights reserved. Reproduced with permission.
www.ICCSAFE.org.
Why climate zone matters
Durability & weather resistance
Different climates expose roofs to varying conditions, such as extreme heat, heavy snowfall, or high humidity. Choosing materials suited to your climate ensures longevity and reduces maintenance need.
Energy efficiency
The right roofing system can help regulate indoor temperatures, reducing heating and cooling costs. Reflective roofs work well in hot climates, while insulated roofs are essential for colder regions.
Moisture & ventilation control
Climate affects how moisture accumulates and dissipates. Proper ventilation and water-resistant materials prevent mold, leaks, and structural damage, especially in humid or rainy areas.
Explore real-world projects for every building type
The Revington
See how the TPO roof system and GAF factory certified contractors met the challenges of a demanding new construction project.
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Bozeman Public Safety Center
The resilient roofing system for the Bozeman Public Safety Center includes GAF SA Vapor Retarder XL adhered directly to the deck, EverGuard® TPO 60-mil Membrane adhered with EverGuard® TPO Quick Spray Adhesive.
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Avalon Bothel Commons
To save time and labor, contractors used GAF Vapor Retarder XL and GAF EverGuard® Quick Spray LV50 Adhesive on the mixed-roof Avalon Bothell Commons.
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Tapered Design
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