Fire Resistant Options for Class A Wood Siding

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Beautiful Class A Wood Siding

Montana Timber Products offers industry-leading flame retardant solutions ensuring compliance with stringent fire codes while preserving the beauty of prefinished natural wood. Whether you’re building in a wildfire-prone zone with strict requirements or seeking enhanced peace-of-mind fire protection, we have the solution for you.

Flame Retardant Treatment Options

SaferWood Thermex-FR™ (Fireline)FX LumberGuard XT
Fire RatingClass-A (ASTM-E84 extended 30-minute test) – IBC 2303.2 CompliantClass A (ASTM E84)
ClassificationFRTW (Fire Retardant Treated Wood)Fire Retardant Coating
PenetrationPressure-impregnated
entire substrate
Surface
WUI ComplianceYesNo
Standards MetMeets or exceeds IBC 2303.2, IWUIC, Cal-Fire BML #2520-1450:0502Intertek CCRR-1044

Both treatments available across all of our prefinished products.  Fire treatments are first applied to our lumber followed by our factory finish.

SaferWood Thermex-FR™ (Fireline):  World-class FRTW

SaferWood Thermex-FR™ (Fireline):  World-class FRTW

SaferWood Thermex-FR™ stands out as the superior choice for fire protection:

  • Advanced Fire Resistance: Exceeds WUI standards with a 30-minute ASTM E84 test, compared to the standard 10-minute test.
  • Permanent Protection: Pressure-impregnated treatment penetrates the entire substrate, ensuring lifetime durability.
  • Compliance Excellence: Fully meets IBC 2303.2 and IWUIC standards, making it ideal for high-risk wildfire zones.
  • Cal-Fire Approved: Listed under Cal-Fire Building Materials Listing #2520-1450:0502.

THERMEX-FR (FIRELINE) – 3rd Party Evaluation Report

FX LumberGuard XT: A Cost-Effective Option

FX LumberGuard XT: A Cost-Effective Option

FX LumberGuard XT is a spray-applied fire-resistant coating that provides Class A fire protection for projects where WUI compliance is not required. It is a great option for:

  • Faster turnaround times
  • Lower-cost
  • Great for interior applications

FX LumberGuard XT3rd Party Evaluation Report

FREE: Home Hardening Guide

We have put together a free home hardening checklist full of tips and best practices to help guide you through the process of hardening your home from the threat of wildfires.

Interested in Learning More?

With over a decade of experience, we are experts in fire-retardant wood solutions that balance safety and aesthetics. Our knowledgeable sales team will help you navigate the changing landscape of wildfire safety and property insurance,  providing personalized guidance on product compatibility, color selection and code compliance to ensure your project’s success.

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Why Montana Timber Products?

natural wood

Embrace Authentic Beauty: We take pride in offering a stunning selection of sustainably farmed species, including Douglas Fir, Cedar, Southern Yellow Pine, and Hemlock ideal for architectural cladding and timbers. Elevate your space with the warmth and elegance of natural wood.

Custom milled

Tailored to Perfection: We can meet your exact design needs our product offerings range from custom siding and trim to large post and beam applications. MTP is the industry leader in specialty lumber.

prefinished

Ready for Immediate Use: Save on time and quality. Our durable, professional-grade Seal-Once finish, applied in our controlled facility, offers superior UV and water protection. Enjoy our premium finish options without the hassle of on-site finishing.

direct to customer

Simplified Purchasing Experience: 
We streamline the buying process and eliminate unnecessary middlemen. This direct relationship ensures that your specific needs are met with efficiency and care. Delivered directly to your jobsite.

Fire Treatment Options FAQ

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