The Gold Standard of Safety: dassoXTR Fire-Resistant Bamboo Decking
dassoXTR Decking is specifically designed for WUI compliance. It has undergone rigorous testing to ensure it can slow the spread of a fire. In fact, all dassoXTR decking and siding materials are WUI compliant, meeting California’s Chapter 7A building requirements.
Class A Flame Spread Rating: How It Protects You
The most critical information for a homeowner is the material's flame spread rating. Fire performance is typically measured by a Class rating.
- Class A Flame Spread Index: This is the best rating a decking material can achieve. It indicates that the material has a low flame spread and does not readily contribute to the spread of flames across the surface.
- Ignition Resistance: Unlike some pvc decking or composite materials that might melt or burn quickly, dassoXTR’s dense bamboo fiber structure provides natural ignition resistant properties.
By achieving a Class A flame spread and ignition performance, this decking acts as a layer of protection for your home. It is important to note that while no wood-based material is entirely non-combustible, a Class A fire-resistant deck significantly reduces the risk of the structure catching fire during a wildfire event.

Top Choices for Fire-Resistant Decking Materials
Modern engineering has provided several safer alternatives to traditional timber. When choosing the right solution, consider the following building materials:
- Fused Bamboo dassoXTR Decking and Railing System: is a standout non-combustible or highly resistant option. It has been tested in accordance with California Standard 12-7A-4A for exterior wildfire exposure. Both their Classic Expresso and Epic Cognac colors passed these tests, making them a reliable material for wildland urban interface areas.
- Composite Decking Materials: While some older composite options contain wood fibers that can burn, many modern composite decking brands have developed fire-resistant building solutions. These materials often achieve a Class B rating by using specialized fire-retardant additives.
- Aluminum Decking and Railing: provides a non-combustible foundation. Unlike wood joists, aluminum framing cannot catch fire, providing superior performance and safety in the event of a wildfire.
By combining fire-resistant materials for both the deck surface and the framing, you significantly reduce the risk of your outdoor spaces contributing to a disaster. Organizations like Firewise USA emphasize that "home hardening"—using materials that resist ignition—is the most effective way to defend property.
Summary of Key Fire Ratings
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Rating Type
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Meaning
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Best For
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Class A
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Lowestflame spread
(0-25 index)
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High-riskwildfire areas
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Ignition Resistant
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Resists starting a fire fromembers
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WUI zones &wildland urban areas
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Non-Combustible
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Does notburn or support combustion
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Maximumprotection (Metal/Stone)
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Investing in high-performancedecking allows you to enjoy your home with peace of mind. For more information on specific materials, you can view the dassoXTR Test Results or explore the Building Material Listing at Office of the State Fire Marshal (calfire.govmotus.org/UserHome).
Comparing dassoXTR to Other Materials
While Composite Plastics and Aluminum Deck System good fire-resistant building solutions, dassoXTR offers an excellent natural aesthetic with similar fire resistance levels.
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Feature
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dassoXTR Bamboo
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Composite Plastics
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Aluminum
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|
Flame Spread
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Class A
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Class C
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Class C
|
|
WUI Approved
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Yes
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Usually No
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Usually No
|
|
Durability
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High - look and feel remain when you maintain as needed
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Variable - color will stay but printed grain will disappear
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Variable - printed surface doesn't last
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Aesthetic
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Natural Wood look and feel
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Plastics and slippery look
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Artificial and hollow sound
|
In a wildfire scenario, a deck can act as a fuel source if not properly fire-resistant. dassoXTR is fully WUI compliant, meeting strict local building codes for ignition resistance. While composite decks and Aluminum might warp or melt, bamboo's density helps it resist ignition.
Building a Fire-Resistant Deck
To further reduce the risk of fire, homeowners can combine fire-resistant materials with smart design choices. Using the full set of fire-resistant framing instead of wood joists creates a more non-combustible substructure. When you install a dassoXTR deck board, you aren't just installing boards; you are installing a system intended to withstand the aspects of fire that destroy lesser materials. dassoXTR not only comes in decking board but also structure lumber that you can use as framing structures.
Following Firewise USA guidelines and local building codes—including local building permits—will ensure your outdoor deck is prepared for wildfire safety. By selecting fire resistant decking, you can enjoy your home with peace of mind, knowing your decking materials provide a critical safety barrier against burning debris.

Building a Safer Deck
To maximize fire safety, consider these building materials and strategies:
- Frame with Fused Bamboo or Metal: Use dassoXTR lumber for framing to ensure the deck structure is non-combustible.
- Mind the Gap: Proper deck board spacing prevents flame spread from trapped debris. Use Panda Claws and control gap at 3/16” using spacer and deck wrench to ensure consistent gap between rows.
- Quality Railing: Pair your dassoXTR deck with Fused Bamboo Railing System with for a complete fire-resistant building solution.
Whether you are comparing composite plastics or aluminum decking, the fire resistance and flame spread index of dassoXTR offer a safer way to enjoy your outdoor interface. By investing in fire-resistant materials, you protect both your building and your peace of mind.
As a conclusion, for homes in Wildland-Urban Interface (WUI) zones, selecting fire-resistant decking, such as dassoXTR Fused Bamboo or TimberTech Advanced PVC Railing System (Vintage and Landmark collections), is crucial for defense against wildfire embers. Integrating non-combustible materials like TimberTech Aluminum Framing and durable railings such as Impression Rail Express ensures maximum safety and compliance with building codes. You can learn more about fire-resistant construction at calfire.ca.gov.
