Built-in Fire Protection

D-Blaze treated lumber and plywood are designed for interior wood framing and sheathing applications where fire retardant construction materials are specified or required by building code. D-Blaze is highly effective at slowing down the spread of flame and reducing smoke development as a result of fire, giving you and your family more time to escape.

D Blaze Multi Family Framing 1
One World Trade Center 4 Ek
Willis Tower, Chicago, built with D-Blaze FRTW
Chicago Navy Pier built with D-Blaze FRTW
Apple HQ dblaze
Legoland hotel castle

35 Years of Proven Performance

  • D-Blaze®fire-retardant treated wood (FRTW) is highly effective at slowing down the spread of flame and smoke caused by fire, increasing evacuation time and potentially reducing damages and repair costs. D-Blaze FRTW effectively slows the combustion cycle of fire by forming a protective layer of char, hindering flame spread and smoke formation.
  • D-Blaze is recognized as a code compliant pressure-impregnated fire-retardant treatment under the International Building Code® (IBC®), International Residential Code® (IRC®) and the National Building Code of Canada® (NBC®) for lumber and plywood products used in fire-rated assemblies and interior applications where fire retardant construction materials are permitted and specified by the building codes.

    Tested and listed by Underwriters Laboratories® (UL® and ULC®), D-Blaze FRTW meets the requirements of construction materials as set forth in all North American building codes. During the code required 30-minute flame and smoke test; UL 723 (ASTM E84 extended to 30 minutes), D-Blaze FRTW shows no evidence of significant progressive combustion or smoke emissions.

    D-Blaze FRTW products are fire resistant, durable, non-hygroscopic, non-blooming, easy to handle, workable with common woodworking tools, and offers a lower in-place cost than materials classified as non-combustible. D-Blaze FRTW has been used in projects across North America, including the One World Trade Center in New York City, the Willis Tower; formerly the Sears Tower and the Navy Pier in Chicago.

    Backed by a 50-Year Limited Warranty, D-Blaze FRTW is protected against structural failure due to strength loss caused by high temperature and high humidity conditions. (See Warranty for details.)
  • See technical documents below.

Product Applications


  • Dblaze Roof

    Roof and Trusses - plywood sheathing, decks and rafters

  • Multifamily framing

    Walls - load bearing and partition, plywood sheathing and studs

  • D Blaze Multi Family Framing 1

    Flooring - subfloors, joists, plywood sheathing, studs and trusses

  • Interior wall framing

    Other Structural Uses - wood framing, stairways, steps, beams, blocking and paneling

The Qualities That Matter to You

Dblaze Roof

Built-in fire protection - D-Blaze treated lumber and plywood designed for interior applications where fire retardant construction materials are specified or required by building code.

Ul And Ulc Logos

D-Blaze FRTW meets or exceeds the testing guidelines for construction materials as established by Underwriters Laboratories UL Class A (Class 1) with FR-S Rating for Plywood and Lumber and Canada CAN/ULC S102.

Screen Shot 2019 11 11 at 1 14 45 PM

ICC-ES Evaluation Report 2645 states Fasteners used in D-Blaze fire retardant treated wood must be galvanized steel, stainless steel, silicon bronze or copper, in accordance with 2018, 2015 IBC Section 2304.10.5; 2012, 2009 and 2006 IBC Section 2304.9.5; 2018, 2015, 2012 and 2009 Section R317.3; ot 2006 ZIrc Section R319.3, and must be subject to the adjustment factors of Table 1.

Greenguard Ul2818 Gold Cmyk Green

UL GreenGuard Gold Certified for low chemical emissions UL 281, the first FRTW of its kind to earn Green Guard certification.

Multifamily framing

D-Blaze earned qualification for the Collaborative for High Performance Schools (CHPS) and the Leadership in Energy and Environmental Design (LEED) Building Rating System. No VOCs. No Formaldehyde.

House with roof framing

Backed by a 50-year limited warranty with 35 years of proven performance.

Ron Blank AIA Course Provider logo Viance

Approved by AIA, Viance's free course on Fire Retardant Treated Wood for CEU credits are published on Ronblank.com.

On Demand Course Title: Fire Retardant Treated Wood for Single, Multi-family and Commercial Structures

Course Number: VIA06E

Course Credit: 1 AIA LU/HSW CE Hour

Course Link

In-person Course Title: Fire Retardant Treated Wood for Single, Multi-family and Commercial Structures

Course Number: IVIA06A

Course Credit: 1 AIA LU/HSW CE Hour

Course Link

Course Description:

Fire-retardant treated wood (FRTW) provides the traditional aesthetic of wood without the fear of flammability. Join us in this one-hour course as we discuss interior and exterior FRTW, codes and tests that ensure FRTW is safe for buildings and their occupants, and the many applications for FRTW products. Participants will get an in-depth look at the manufacturing process that creates safe, sustainable, and aesthetically-pleasing wood that can be used in all of their projects.

Learning Objectives:

1. Explain how fire-retardant treated wood (FRTW) reduces personal injury and property damage by reducing the spread of flame and smoke

2. Discuss the differences between interior and exterior FRTW and common applications of each

3. Identify the organizations and codes that ensure FRTW products are standardized and safe for future users, especially in the event of an emergency

4. List the various tests and quality control processes used to analyze FRTW products’ ability to slow the spread of flame, protecting a building and its occupants

BAAC Viance logo copy

D-Blaze meets the criteria to qualify for the Buy American Act Certification. 

This letter serves as compliance certification that Viance preservatives for the D-Blaze brand are manufactured in the United States and meet the requirements of the Buy American Act.

Download a copy of Viance's BAA letter of compliance here.