Wood Protection

Lumber Treatments

CitroTech 34 brings modern, clear-coat fire protection to lumber, plywood, and OSB — delivering Class A performance while preserving strength and appearance.

Class A

ASTM E84 + E2768

Lumber Treatments

Clear. Proven. Third-Party Verified.

CitroTech 34 (MFB-34) offers next-generation, Class A fire protection for wood. Certified under DrJ TER 2504-101 and tested to ASTM E84 and E2768 standards, it delivers rigorous, third-party verified safety without altering the aesthetic of your materials.

Beyond its rigorous compliance, MFB-34 is engineered to be invisible yet invincible. Unlike traditional fire retardants that leave a chalky residue or require opaque topcoats, this formula absorbs fully to preserve the natural grain and aesthetic of the wood. It's the ideal solution for protecting exposed beams, eaves, and architectural siding without sacrificing design for safety, ensuring your structure is defended by non-toxic, eco-friendly chemistry that is safe for both installers and the environment.

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What Sets It Apart

Performance Without Compromise

Class A Fire Rating

We believe protection starts before ignition — helping people and industries act early to reduce risk.

Maintains Strength

Backed by patents, testing, and data. CitroTech meets EPA Safer Choice, ASTM, and TER standards for verified performance.

Third-Party Verified

Proven through rigorous testing and real-world use. Trusted by builders, agencies, and professionals nationwide.

Clean Chemistry

Made from three food-based ingredients. Non-toxic, non-corrosive, and dries clear — a cleaner path to fire defense.

CitroTech lumber treatment product application

How It Works

A Transparent Barrier That Protects Without Compromise

CitroTech forms a bonded surface layer that limits flame spread and smoke development. Applied at the surface rather than pressure-treated, it safeguards structural integrity while keeping wood looking natural.