Fire Retardant Ember Guard | Class A | Tote by TimberPro

TimberPro's Ember Guard is a clear, non-harmful, water-based fire retardant designed for untreated wood surfaces. Independently tested to ASTM E84 standards, it achieves a Class A fire rating with a Flame Spread Index (FSI) of ≤25 and a Smoke Developed Index (SDI) of 0, a performance level usually reserved for non-combustible materials. The formula penetrates deeply into the wood's cellular structure, creating a durable internal barrier that significantly reduces flame spread and may prevent smoke generation. Beyond fire resistance, Ember Guard enhances the wood's dimensional stability, helping to prevent swelling, shrinking, and moisture intrusion, and can deter wood boring pests.

• Fire Resistance: Class A (ASTM E84) with FSI ≤ 25
• Smoke Development: Zero Smoke Developed Index (SDI = 0)
• Appearance: Clear, colorless (may patina or temporarily darken wood)
• Wood Protection: Structural stabilization & moisture barrier
• Safety: Non-toxic, water-cleanup, zero VOC
• Durability: Permanent internal treatment, no reapplication usually needed
• Usage: Compatible with both interior and exterior applications
• Application: Easy spray or brush application
• Compatibility: Works with LS PRO, LSS, DF stains (exterior/interior) and Crystal Urethane (interior)