Class A Fire Protection for Wood
CitroTech-34
Clear-drying, non-toxic chemistry that delivers Class A fire performance to interior framing, exterior assemblies, and wood components—without altering the natural appearance of the material.
Fire Protection
Premium Fire Retardant Treatment
Class A fire protection that preserves the natural beauty of wood.
CitroTech 34 (MFB-34) is a Class A fire inhibitor for wood, engineered to enhance ignition resistance without affecting the natural look, feel, or structural properties of lumber. The formula dries clear, is non-toxic, low-VOC, and suitable for both interior and exterior assemblies.
Class A Fire Rating
Meets ASTM E84 requirements for flame spread and smoke development.
Clear Finish
Maintains the natural appearance and grain of treated wood.
Low-VOC
No PFAS, no halogens, and GREENGUARD Gold–recognized ingredients.
Durable Protection
Designed for long-term performance in framing and finish applications.
How It Works
Fire Protection for Wood
CitroTech-34 is applied directly to wood, where it dries clear and integrates with the surface fibers. Once cured, it enhances ignition resistance and reduces flame spread—helping treated assemblies achieve Class A fire performance without altering the wood’s natural appearance or properties.
Apply
Applied to lumber or wood assemblies using spray or factory treatment methods.
Dries Clear
Dries transparent with no change to the wood’s natural appearance.
Improves Fire Performance
Enhances ignition resistance and limits flame spread at the wood surface.
Trust & Compliance
Certifications & Testing
Our products undergo rigorous third-party testing to ensure the highest standards of safety and performance.
UL GREENGUARD Gold
Low chemical emissions for safe use around people and animals.
Trout Toxicity Test
Non-toxic certification (LC₅₀ > 750 mg/L).
QAI Fire Performance Test
Independent validation of ignition resistance.
Protect your investment today with CitroTech.
Get connected with our team to learn how CitroTech can help safeguard your home, business, or community.