Hurricane Impact Codes for Windows and Doors: What Builders Need to Know

The strong winds and flying debris can cause devastating damage to homes and buildings, particularly through vulnerable windows and doors. As building codes are strengthened to ensure home products provide the protection and resilience to withstand these conditions, it’s critical for builders to understand the latest requirements for hurricane-impact products. Ply Gem offers an extensive portfolio of coastal windows and doors that can be configured to meet even the toughest impact requirements and help your project comply with the impact standards you need.

Understanding Hurricane Impact Codes
Hurricane impact codes are regulations set by local and national authorities to ensure that buildings can withstand the forces generated by high winds and flying debris during a hurricane. These codes primarily target coastal and inland regions prone to hurricanes, such as the Southern regions around Florida and the Gulf Coast, but are increasingly being adopted in other areas prone to tropical depressions.

Testing Standards for Impact-Resistant Products
Below are some of the most widely recognized standards and impact certification testing organizations for windows and doors. However, you must always verify and comply with all state and local certification requirements.

• Florida Building Code (FBC) Certification: Statewide product approval that complies with rigorous coastal building codes and serves as a benchmark for many other states.
• Miami-Dade County Certification: Recognized as the highest certification for High Velocity Hurricane Zones (HVHZ), which are deemed severe hurricane regions with maximum wind velocity. These products are required to pass demanding impact tests and intensive cyclic pressure testing.
• ASTM E1886 and E1996: These national standard test methods specify the performance of exterior windows and doors during wind-borne debris impacts and cyclic wind pressure.

Ply Gem offers vinyl, aluminum-clad and aluminum windows and doors that can be configured, tested and certified to meet HVHZ, Missile D and Missile C impact requirements:

Ply Gem Impact-Resistant Windows

• MIRA Series Windows – Aluminum-Clad Wood
• 1500 Collection Windows – Vinyl
• Classic Series Windows – Vinyl
• 4800 Series Windows – Aluminum
• 4700 Series Windows – Aluminum

Ply Gem Impact-Resistant Doors

• Perspective Multi-Slide Patio Door – Vinyl
• 1500 Collection Sliding Patio Door – Vinyl
• MIRA Series Patio Doors – Aluminum-Clad Wood
• 4780 & 4880 Sliding Patio Doors – Aluminum

Window & Door Labeling and Documentation
Builders must ensure that every window and door installed in areas that require impact certification is clearly marked with the required certification label and supported by documentation confirming compliance with all applicable codes. During the final inspection, examiners will check that these labels are present.

Impact Installation Requirements
Even the highest-rated impact window or door can fail if it is not installed correctly. Proper new construction or retrofit installation is just as important as product selection for ensuring long-term performance, energy efficiency and increased safety. To achieve the intended level of protection and avoid costly failures or callbacks, builders should:

1. Follow manufacturer instructions for framing, anchoring, sealing and fastener placement.
2. Use specified fasteners and anchors to ensure units are securely fastened in high-wind or coastal regions.
3. Utilize compatible sealants and flashing materials that meet both local code requirements and manufacturer specifications.
4. Ensure proper integration with the building envelope to prevent water infiltration.

Secure Permits and Prepare for Inspection
Builders must have all required permits prior to installation and ensure that all inspections are scheduled and completed to complete the project. Being unprepared may result in failed inspections, fines or the removal and replacement of non-compliant products.

Builder checklist for installing windows and doors in impact regions.

1. Stay current with local, state, and national impact building codes
2. Work closely with dependable, certified suppliers like Ply Gem Windows & Doors
3. Educate clients on the importance of impact-resistant windows and doors.
4. Manage document compliance throughout the project.

Compliance with hurricane impact codes for windows and doors is essential to ensuring the safety and longevity of new homes and renovations in hurricane-prone regions. By understanding the applicable codes and installing quality impact-resistant Ply Gem products, professionals can safeguard their clients while also protecting their own reputations.

Explore additional window and door resources in the For Pros section at plygem.com.