ThermaWood FR Hemlock fire retardant treated siding with two different colored stains

Mataverde SaferWood Fire Retardant Treated Wood Siding

 

Mataverde SaferWood FTRW Fire-Retardant Treated Wood Building Materials  including decking, siding, framing lumber and wood fencing



On this Page:      Siding Options       Technical/Compliance



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Mataverde SaferWood brings a distinctive natural appeal to your design, featuring its industry-leading, eco-friendly Thermex-FR fire retardant treatment. This ignition resistant fire retardant treatment ensures your projects meet or exceed the most stringent fire safety standards, including Wildland Urban Interface (WUI) and International Wildland Urban Interface (IWUI) code requirements.

ThermaWood FR Hem-Fir Siding Outdoor KItchen interior view The Ridge House project CA

 

Explore your real wood cladding choices in a wide range of high-performance Mataverde SaferWood cladding applications in several species and different wood siding profiles to complete your design beautifully, naturally and safely.

 

Download the current Mataverde SaferWood Project Portfolio for more ideas now


Mataverde SaferWood ThermaWood Hem-Fir transformed this complete exterior renovation in Tahoe, CA while aligning with the homeowners' preference for real wood and complied with the local WUI fire code.

"We're still very satisfied with our siding! We get a lot of compliments.

The color looks really rich and we like it a lot.

Our builder called about it  just three or four months ago and we referred him to you. "

- Andrew Byer, Homeowner, Tahoe, CA


 

 


Mataverde Fire Resistant Wood Siding Options

Superior fire protection meets unmatched natural beauty for real wood cladding and design flexibility. The Mataverde SaferWood collection of fire treated siding profiles and wood species provide durability and sophisticated visual aesthetics to your projects.

Meet the SaferWood siding starting lineup:

 

Mataverde SaferWood STK (Select Tight Knot) Western Red Cedar Siding

This rustic appearance real wood siding features a V-groove at the top and bottom of each piece of siding for a clear line. The siding material is reversible, and graded to the resawn face. It may also be installed with the smooth side out, with the V-groove still visible on either face.

Wood Species: Western Red Cedar

Grade: STK (Select Tight Knot), graded to the resawn face

Mataverde SaferWood 1x6 STK Western Red Cedar siding, 711 T&G profile

Size: 1x6 nominal, 11/16" thick x 5" width (coverage)

Profile: Tongue and Groove (T&G), 711R1 profile (graded to resawn face)

711R profile is a reversible siding option, v-grooved on both sides with a smooth and resawn face

Treatment: Thermex-FR, kiln dried after treatment.

Installation: Vertical, horizontal or diagonal

Ideal Use: Siding or soffits, where natural wood beauty and high fire resistance are required



Mataverde+ SaferWood FR Hem-Fir 633 T&G

Because this Western Hemlock siding is thermally modified before it's fire retardant treatment, it is highly stable, and has a rich color tone. The 633R profile is graded to the resawn face. This profile fits snugly together for a tight siding appearance. 

Wood Species: Western Hemlock (Hem-Fir), thermally modified

Grade: A&Btr, vertical grain

Mataverde saferWood Thermally Modified Hemlock Aye grade 85-15 vertical grain

Size: 1x6 nominal, 11/16" thick x 5" width (coverage)

Profile: Tongue and Groove (T&G), 633R1 reversible profile

Mataverde Therma Hem Fir 633 reversible siding profile

Treatment: Thermally modified prior to treatment, Thermex-FR, kiln dried after treatment

Installation: Vertical, horizontal or diagonal

Ideal Use: Siding and soffits, where the beauty of real wood and a high level of fire resistance are required

 

ThermaWood FR thermally modified wood siding and soffits in Boise, Idaho-1 (1)


 

Mataverde SaferWood ThermaWood FR Hem-Fir Nickel Gap T&G

The nickel gap profile has a unique look with a clearly defined gap at the top of each siding board for clean lines. Graded to the smooth face.

Wood Species: Western Hemlock (Hem-Fir), thermally modified

Grade: A&Btr, vertical grain

Size: 1x6 nominal, 11/16" thick x 5" width (coverage)

Mataverde SaferWood ThermaWood FR 1x6 T&G Nickel Gap profile creates a beautiful shadow line

Profile: Tongue and Groove (T&G), "Nickel Gap" profile

Mataverde SaferWood 1x6 ThermaWood Hem Fir Nickel gap profile

Treatment: Thermex-FR, kiln dried after treatment

Installation: Vertical, horizontal or diagonal

Ideal Use: Siding or soffits, where natural beauty and fire resistance are required


Request Mataverde SaferWood Fire Retardant Treated Wood Siding Samples today!


Arbor Wood SaferWood FR Pine Nickel Gap T&G

Arbor Wood SaferWood is first thermally modified for stability and durability, and then fire retardant treated for ignition resistance. This nickel gap profile has a unique look with a clearly defined gap at the top of each siding board for clean lines. The distinctive graining of the Southern Yellow pine boards shine through. 

Wood Species: Southern Yellow Pine (SYP), Thermally modified

Grade: C or Better, Clear

Size: 1x6 nominal, 3/4" thick x 5" width (coverage)

Arbor Wood thermally modified pine siding oil finish

Profile: Tongue and Groove (T&G), "Nickel Gap" profile

Mataverde SaferWood 1x6 ThermaWood Hem Fir Nickel gap profile

Treatment: Thermex-FR, kiln dried after treatment

Installation: Vertical, horizontal or diagonal

Ideal Use: Siding, soffits or fencing, where natural beauty and fire resistance are required

Arbor Wood thermally modified pine siding horizontal


 

Arbor Wood SaferWood FR Ash Nickel Gap T&G

This nickel gap profile has a unique look with a clearly defined gap at the top of each siding board for clean lines. The distinctive of the Southern Yellow pine boards shine through. 

Wood Species: American White Ash, Thermally modified

Grade: Premium Clear

Size: 1x6 nominal, 3/4" thick x 5" width (coverage)

Arbor Wood thermally modified 1x6 T&G Ash cladding with SaferWood Thermex-FR

Profile: Tongue and Groove (T&G), "Nickel Gap" profile

Mataverde SaferWood 1x6 ThermaWood Hem Fir Nickel gap profile

Treatment: Thermex-FR, kiln dried after treatment

Installation: Vertical, horizontal or diagonal

Ideal Use: Siding, soffits, or fencing where natural beauty and fire resistance are required

Arbor Wood thermally modified Ash vertical siding


Mataverde ThermaWood FR Hem-Fir Rainscreen

Choose this profile for a sustainable rainscreen design, without using furring strips. This profile has a 3/16" gap line at the top each siding board. Installs quickly and effectively with the Climate-Shield Wood Rainscreen System™.

Wood Species: Western Hemlock (Hem-Fir), thermally modified

Grade: A&Btr, vertical grain

Size: 1x6 nominal, 11/16" thick x 4-11/16" width (coverage)

Mataverde SaferWood Thermawood FR Hemlock diagonal rainscreen siding can be installed vertically, horizontally and diagonally

Profile: Rainscreen profile, for use with the Climate-Shield rainscreen system

Climate-Shield standard 1x6 rainscreen wood siding profile to create a rainscreen design without using furring strips

Installation: Vertical, horizontal or diagonal with Climate-Shield rainscreen components

Ideal Use: Siding or soffits, where natural beauty and fire resistance are required


Ready to see if Mataverde SaferWood siding meets your siding budget requirements?

Request a Quote today!

 


 

Why Use Mataverde SaferWood Siding?

  • Natural Beauty. Experience the elegance of ignition-resistant real wood siding

  • Design Flexibility. Choose the wood species and siding profile to meet your unique project design needs.

  • Aesthetic Options. Looking for a tight siding joint for your project? Choose the 633R1 profile. It's reversible. If your project calls for a more rustic appeal, use the 633R1 siding with the rough sawn face out. If you are aiming for a more sophisticated allure, use the 633R1 smooth side out. Need a pronounced shadow line? Choose the nickel gap profile.
     
  • Color options. Mataverde SaferWood siding may be painted or stained to meet your color scheme needs.

  • Fire Safety. Help protect your property with ignition resistant real wood siding. 


Mataverde SaferWood Thermawood FR TG Hemlock siding Nickel gap profile and soffit painted and stained with different colors


See for yourself. Request Mataverde SaferWood siding samples today.

 


 

Fire Resistant Siding: Why Choose Mataverde® SaferWood Fire-Retardant Treated Siding?

For projects demanding the highest level of fire safety, Mataverde® SaferWood provides comprehensive protection, and peace of mind. It is the only fire retardant treated wood that safely meets all the following criteria. Here's why you should trust it:

Established Verified Fire Code Compliance:

  • Mataverde Saferwood fire-retardant treated wood is IWUI code compliant per ICC-ES, ESR-1159 & ESL-1021.

  • Download the ICC-ES Report here. 

  • Meets the stringent code compliance of California Chapter 7A WUI for ignition resistance.

  • Passes the OSFM California 10-year outdoor weathering test, providing documented durability.

  • Classified as ignition resistant.

 

RELATED: Download the Mataverde SaferWood Product Brochure now


 






Mataverde SaferWood ThermaWood FR Hem-Fir Siding and soffits with Thermex-FR fire retardant treatment

 

DOWNLOAD TONGUE AND GROOVE SIDING INSTALLATION TIPS HERE


 

Impressive Performance:

  • Kiln-dried after treatment for dimensional stability and reduced moisture content.

  • Consistent material properties for predictable structural performance.

  • Suitable for a wide range of exterior applications

  • Includes a Limited Lifetime Warranty

 



 

 


Mataverde SaferWood Fire Retardant Treated Lumber Advantages

When it comes to Fire Retardant Treated Wood (FRTW), you might be wondering, "Aren’t all fire-resistant wood treatment options the same?" The short answer is, No, and the differences are crucial to know.

Compare typical fire retardant surface treatments to Thermex-FR:

 

Surface Only Fire-Retardant Wood Treatments

Many fire-retardant treatments only coat the surface, offering limited protection. Surface treatments will wash or ‘shed’ off. Some surface treatments contain harsh chemicals, which means working with treated lumber may require safety precautions. 

FRTW (Fire-Retardant Treated Wood) Penetrating Treatment

Lumber labeled “FRTW” indicates it has been treated at the factory under pressure, penetrating the fire retardant deep into the wood material. This method provides longer lasting and more thorough protection of the wood. Mataverde SaferWood is an FRTW labeled lumber treated with Thermex-FR, a leader in innovative and non-toxic wood fire retardant treatment. 

Mataverde SaferWood Appearance

Other fire retardant treatment processes are effective. Mataverde SaferWood with Thermex-FR fir resistance has the best looking finish of them all. It can also be painted, stained or dyed with appropriate finishes to meet your project design scheme.

 


The Thermex-FR Fire-Retardant Wood Treatment Advantage

Mataverde SaferWood with Thermex-FR:

  • Proprietary, non-toxic, eco-friendly and non-leaching formulation.

  • One-time factory treatment that is permanent, penetrating to the cellular level of the wood. Then it is kiln dried after treatment for long lasting performance and durability.

  • Non-corrosive and exceptionally resistant to decay and insect infestation.

This is where Mataverde SaferWood with Thermex-FR truly shines; Thermex-FR is recognized as a top-tier example of effective FRTW. It is a permanent, non-toxic, ignition resistant, fire-retardant treatment that penetrates to the wood cellular level,  and will not wash or shed off. Plus, because it uses no toxic chemicals, Mataverde SaferWood is sustainable and recyclable.


RELATED: Download the Technical Data Sheets for more information. 

 

As an architect or home builder working in areas prone to wildfires and other high-fire zones, you know how critical it is to choose the right materials. That's where Mataverde SaferWood really shines. It's not just another fire-treated wood; it's a reliable solution. With Mataverde SaferWood products with Thermex-FR fire retardant treatment, you can be sure your designs meet tough fire safety codes, like WUI and IWUIC, and stay strong over time. When you use Mataverde SaferWood, you're not just building a structure; you're building confidence. You're giving your clients a design that's both safe and built to last, all while keeping that high-quality look you're going for.


Get answers on Mataverde fire-retardant treated wood solutions

straight from the experts.

 

Get answers on Mataverde SaferWood fire-retardant treated wood solutions straight from the experts. 

Connect with our West Coast team of trained

Mataverde SaferWood experts now. 

 

West Coast Main Number:  707-794-0510   |   8:00 AM - 4:00 PM PT

Questions? Tell us about your project. Find your local expert rep now:

SoCal, AZ, UT, NM, CO

Andrea Monti

 Email Andrea Here

 619-464-9959

Northern & Central CA, NV

Glen Kiser

 Email Glen Here

 209-456-9208

 

 

Western Regional Manager

Perry Alibrio

 Email Perry Here

  707-217-0657

 

 

Or contact us here:

FAQs

Q: What makes Mataverde SaferWood Siding unique?

A. Mataverde SaferWood stands out by seamlessly blending the organic elegance, structural integrity, and workability of authentic timber with a certified Class A fire rating. Powered by the sustainable, eco-friendly Thermex-FR® vacuum-pressure treatment, this siding allows architects and builders to specify luxury, high-end natural wood profiles in strict wildfire-prone regions without sacrificing safety or design intent.

Q: How does Mataverde SaferWood earn a Class A fire rating?

A. The material achieves its Class A fire rating via an advanced, non-toxic Thermex-FR® pressure-infusion process. Rather than relying on a vulnerable surface film, this technology deeply impregnates the timber at the cellular level to form a permanent, integrated fire barrier. Because the fire retardant is bound directly within the wood matrix, it is completely non-leaching and cannot degrade, weather, or wash away over time.

Q: How does Mataverde SaferWood's aesthetic compare to fiber cement?

A. Mataverde SaferWood delivers the genuine warmth, tactile depth, and varied grain patterns of premium natural timber—elements that fiber cement cannot convincingly replicate. While fiber cement siding is prone to repetitive, artificial patterns and a cold, sterile appearance, authentic wood provides a high-end aesthetic. Additionally, unlike brittle fiber cement which chips easily, SaferWood offers superior impact resistance and long-term structural resilience.

Q: Is Mataverde SaferWood better than composite for high-end siding?

A. Absolutely. While synthetic composites provide basic durability, they lack the organic texture, rich color depth, and natural thermal insulation properties of authentic lumber. Mataverde SaferWood offers a premium architectural aesthetic featuring genuine wood grain, complex tonal variations, and superior environmental performance, making it the preferred choice for luxury residential and commercial facades.

Q: What are the benefits of real wood over fiber cement in WUI zones?

A. In Wildland-Urban Interface (WUI) zones, specifying a Thermex-FR® treated natural wood like SaferWood provides significant advantages over fiber cement:

    • Elevated Aesthetics: Delivers an authentic, high-end design presence rather than a synthetic look.

    • Superior Durability: Offers excellent impact resistance against windborne debris and hail.

    • Installation Efficiency: Works easily with standard woodworking tools, eliminating the need for specialized dust-collection cutting equipment and speeding up job site timelines.

Q: What are the long-term maintenance differences between Mataverde SaferWood and composites or fiber cement?

A. Sustainability and low carbon footprint are core to SaferWood’s design profile:

    • Renewable Sourcing: Manufactured from 100% natural, responsibly harvested timber.

    • Eco-Friendly Chemistry: The non-toxic Thermex-FR treatment is fully cured, chemical-free, and safe for biophilic architecture.

    • End-of-Life Circularity: Unlike synthetic composites, plastics, or fiber cement, SaferWood is a naturally biodegradable and recyclable material that does not contribute to permanent landfill waste.

Q. “Is the fire-retardant treatment any good? Or is it just like surface treatments?”

A. Unlike topical fire coatings that sit on the surface and risk wearing away, the Thermex-FR fire-retardant process utilizes deep-pressure injection to permanently lock protection into the wood's inner cellular structure. This deep impregnation ensures complete, full-depth protection with three key physical properties:

    • Non-Leaching Performance: Rain, heavy humidity, and cyclic moisture exposure will not wash out or degrade the fire protection.

    • Non-Toxic Composition: Environmentally safe, non-toxic, and ideal for sustainable, biophilic design.

    • Lifelong Integrity: The fire-retardant performance remains active and embedded within the wood matrix for the lifetime of the siding.

Q. “Is it worth the value?”

A. Yes. Mataverde and Arbor Wood SaferWood siding delivers exceptional asset protection, code compliance, and proven exterior durability. Key testing milestones and regulatory approvals include:

    • Ignition-Resistant Material: Formulated to self-extinguish and dramatically slow down flame spread.

    • WUI & IWUI Compliance: Approved for legal construction within strict Wildland-Urban Interface (WUI) and Inter-Wildland Urban Interface zones.

    • California 10-Year Outdoor Weathering Test: Verified by third-party testing to retain its full fire-retardant efficacy even after a decade of direct, severe outdoor exposure.

Q. “What’s the benefit in design and longevity?”

A. SaferWood exterior siding offers a rare combination of high-end architectural flexibility, minimal maintenance, and generational longevity. The top four performance and design benefits include:

      • Siding Design Versatility: Integrates flawlessly with modern, high-performance rainscreen systems as well as traditional siding profiles.

      • Aesthetic Range: Supports diverse design palettes, ranging from warm, natural wood stains to a dramatic, charred Shou Sugi Ban aesthetic.

      • 25+ Year Lifecyle: Engineered for an expected service life exceeding 25 years with very little l upkeep required.

      • Lifetime Treatment Warranty: The fire-retardant performance is backed by a warranty that lasts for the entire lifespan of the wood.