Engineered for Fire: How Stucco Strengthens Nation’s First Wildfire Prepared Neighborhood
Apr 9, 2026
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California’s high fire-risk zones have increased by 168% over the past 15 years, encompassing nearly twice the area of Delaware and placing more communities squarely in what builders call the “red zone.” For homebuilders operating in these areas, compliance with Chapter 7A of the California Building Code—which provides “minimum standards … to resist the intrusion of flames or burning embers”—is mandatory. But for forward-thinking teams, code compliance is only the starting point.
Dixon Trail in Escondido, California, sets the bar higher.
Built in a designated high fire hazard severity zone, Dixon Trail became the nation’s first Wildfire Prepared Neighborhood, constructed to standards that exceed Chapter 7A requirements. Working alongside wildfire mitigation experts, the team focused on one primary objective: stop embers from turning a single ignition point into a community-wide conflagration.
The 64-home neighborhood addresses wildfire risk at every scale—from five-foot defensible space zones and steel fencing to ten-foot separations between homes. Roofs, doors, and windows are fire-rated. Landscaping is carefully controlled. And central to the neighborhood’s fire-resilient design is a material long trusted across the state: stucco.
Stucco is a noncombustible material that, at 7/8" thickness, achieves a one-hour fire-rated wall. According to the Stucco Manufacturers Association, stucco is a preferred exterior siding material by the California Department of Forestry and Fire Protection (commonly referred to as CAL FIRE).
“It is the most economical option for fire resistance. It’s naturally fire-resistant, being a cement-based product,” said Kevin Wensel, director of product management at Omega Products, the stucco supplier for the Dixon Trail project. “It’s monolithic. There’s not a lot of openings, outside of what they choose to put into it, so there’s no gaps for embers to get through.”
At Dixon Trail, stucco was not only used for primary wall surfaces but also for architectural elements such as foam shutters and eaves. Even the weep screed at the base of the stucco walls plays a critical role in fire protection: Designed with holes no bigger than an eighth of an inch, the screed keeps embers from going up into the wall. The result is an exterior wall assembly that resists ignition from wind-driven embers—the primary cause of home loss during wildfire events.
Performance Behind the Finish: Structa Wire Stucco Lath
While stucco provides the fire-resistant exterior, the performance of the system depends on what supports it. At Dixon Trail, that support comes from ClarkDietrich’s Structa Wire Structalath 316.
“Structalath is a great product and, in my opinion, a far more superior product than regular woven wire,” said Ryan Loutherback, VP of operations at Pro Wall Lath & Plaster, the stucco contractor on the Dixon Trail project. “The furring off the foam allows the cement to get behind the wire for far better embedment, which allows the cement to cure at a better rate.”
Wensel of Omega Products echoed the advocacy for Structalath, citing it as a “superior product” to woven wire, which is commonly used in the western United States.
“It has better embedment, which helps minimize cracking and helps ensure they get the proper thickness of stucco on the wall,” he said.
This even coverage ensures the stucco walls won’t have any holes or gaps where embers could enter.
Another big player in ember protection is ClarkDietrich’s Structa Wire V Truss for Walls & Ceilings (VTWC), a self-furring welded wire lath that helped achieve thorough stucco embedment on the soffits of the Dixon Trail homes. High winds can push embers upward into the under-eave area, making soffits one of the most vulnerable surfaces on a home during a wildfire event. California Building Code Chapter 7A (Section 704A.2.3) specifically requires that eaves and soffits be protected by ignition-resistant or noncombustible materials. A stucco soffit assembly—supported by VTWC lath—delivers exactly that: a monolithic, noncombustible surface with no gaps for embers to penetrate.
A Model for the Future
While Dixon Trail is the nation’s first Wildfire Prepared Neighborhood, it certainly won’t be the last. The Wildfire Prepared Neighborhood model is already advancing in other parts of the state and will continue targeting communities where wildfire risk and insurance pressures are reshaping the housing landscape.
Beyond Wildfire Prepared Neighborhoods, the lessons learned at Dixon Trail inform a broader strategy: build smarter, build safer, and build for the realities of today’s climate. As proven at Dixon Trail, this strategy comes to life with thoughtful site planning, noncombustible materials, and high-performance stucco assemblies reinforced with Structa Wire. Together, they demonstrate that wildfire resilience is not about a single product. It is about a system—engineered, detailed, and executed to protect homes and communities when it matters most.
Structa Wire products featured in the Dixon Trail Wildfire Prepared Neighborhood:
