TruExterior Siding and Trim: Fire-Rated Curb Appeal for Wildfire Zones
TruExterior Siding and Trim: Fire-Rated Curb Appeal for Wildfire Zones
When it comes to wildfire protection, homeowners often face a difficult trade-off between safety and style. Fortunately, with TruExterior Siding and Trim, you don’t have to compromise. Made from a unique poly-ash blend, TruExterior products deliver the timeless look of traditional wood while offering the Class A fire rating and durability that homes in wildfire-prone areas demand.
At Colorado Wildfire Defence, we help homeowners build beauty and resilience into every part of their exterior. TruExterior siding and trim are standout solutions for those who want to harden their homes against wildfire without giving up classic design.
What Is TruExterior?
TruExterior is an innovative line of poly-ash siding and trim products manufactured by Boral (now part of Westlake Royal Building Products). The poly-ash composition blends fly ash (a byproduct of coal combustion) with proprietary polymers to create a highly stable, moisture-resistant, and non-combustible material that looks and works like real wood.
What sets TruExterior apart is its unique combination of:
Authentic woodgrain textures and traditional profiles
Superb workability with standard tools
Stability in all weather conditions
Resistance to moisture, insects, and fire
Class A Fire-Rated Performance
One of the most critical features of TruExterior is its Class A fire rating, which means it provides:
Maximum resistance to flame spread
Low smoke development
Excellent protection against ember attack and radiant heat
These attributes make TruExterior a top-tier choice for homes in Colorado’s Wildland-Urban Interface (WUI), where fire codes increasingly require ignition-resistant materials.
Beautiful, Flexible Design Options
With TruExterior, fire resistance doesn’t mean boring design. The product line includes a wide range of lap siding, shiplap, channel profiles, and trim boards that mirror the charm and character of traditional wood siding. It can be painted any color and installed with the same tools and techniques used for real wood.
Popular profiles include:
V-Rustic Lap for a classic Western look
Nickel Gap Shiplap for modern farmhouse appeal
Beaded and Cove profiles for historical authenticity
Reversible trim boards for design flexibility
This makes it ideal for both new construction and historic home renovations where aesthetic continuity matters.
Benefits of TruExterior in Wildfire Mitigation
At Colorado Wildfire Defence, we use TruExterior as part of comprehensive home hardening projects. Key benefits include:
Non-combustible exterior that resists ignition from embers
Dimensionally stable materials that won’t crack, swell, or warp
Moisture and pest resistance for long-lasting performance
Compatible with fire-rated wall assemblies for Class A compliance
We also ensure proper installation with non-combustible underlayment and sealed transitions to maximize protection.
Why It Matters
Most homes are vulnerable not because of large flames—but because of tiny embers that exploit gaps, flammable surfaces, and outdated materials. Siding is one of the largest exposed surfaces on a home, and flammable siding (like wood or vinyl) is often the ignition point.
Upgrading to TruExterior siding and trim provides a durable, fire-resistant shield that keeps embers out and heat from penetrating walls. Plus, it satisfies insurance and building code requirements without sacrificing style.
Trusted by Experts, Installed by Specialists
TruExterior is used by architects, builders, and remodelers who demand performance and appearance. At Colorado Wildfire Defence, our expert installers ensure that every product is integrated into a complete Class A-rated exterior system. That includes:
Fire-rated underlayment
Ember-resistant venting
Flame-retardant coatings
Gutter and deck protection
We don't just sell materials—we deliver whole-home wildfire resilience.
The Bottom Line
If you're looking to upgrade your home’s siding or trim for wildfire protection, TruExterior offers the best of both worlds: outstanding Class A fire performance and authentic curb appeal. Whether you're building a new home or retrofitting an existing one, TruExterior helps you stay safe without sacrificing the beauty of your home.
Contact Colorado Wildfire Defence today to schedule a wildfire home audit and explore how TruExterior siding and trim can play a vital role in your fire-hardening strategy.
