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Ember Guard Pro is a clear, non-toxic, water-based mineral fire retardant designed for untreated wood surfaces. Independently tested to ASTM E84 (Extended 20 minutes) and ASTM E2768-11 standards by QAI Laboratories, it achieves a Class A fire rating with a Flame Spread Index (FSI) of 10 and a Smoke Developed Index (SDI) of 5—demonstrating superior flame and smoke suppression. ASTM E2768-11 meets the Wildland Urban Interface (WUI) code requirements in most jurisdictions and qualifies treated substrates as Ignition Resistant Material.
The formula penetrates deeply into the wood’s cellular structure, forming a durable internal barrier that significantly reduces flame spread and may prevent smoke generation. In addition to fire resistance, Ember Guard Pro enhances the wood’s dimensional stability—helping to prevent swelling, shrinking, and moisture intrusion, and can deter wood boring pests.



Ember Guard Pro is a clear, non-toxic, water-based mineral fire retardant designed for untreated wood surfaces. Independently tested to ASTM E84 (Extended 20 minutes) and ASTM E2768-11 standards by QAI Laboratories, it achieves a Class A fire rating with a Flame Spread Index (FSI) of 10 and a Smoke Developed Index (SDI) of 5—demonstrating superior flame and smoke suppression. ASTM E2768-11 meets the Wildland Urban Interface (WUI) code requirements in most jurisdictions and qualifies treated substrates as Ignition Resistant Material.
The formula penetrates deeply into the wood’s cellular structure, forming a durable internal barrier that significantly reduces flame spread and may prevent smoke generation. In addition to fire resistance, Ember Guard Pro enhances the wood’s dimensional stability—helping to prevent swelling, shrinking, and moisture intrusion, and can deter wood boring pests.
FEATURES
• Class A Fire Retardant (ASTM E2768 & ASTM E84 Extended) (FSI =10)
• Strong smoke suppression with an ultra-low Smoke Developed Index (SDI = 5)
• Clear & colorless but may deepen/enhance the natural color of the wood
• Structural stabilization & internal moisture control
• Non-toxic, water-cleanup, and zero VOC
• Permanent internal treatment — no reapplication needed in most circumstances
• Compatible with both interior and exterior applications
• Easy spray or brush application
• Compatible with LS PRO, LSS, DF stains for exterior/interior and Crystal Urethane for interior

Ember Guard Pro is a clear, non-toxic, water-based mineral fire retardant designed for untreated wood surfaces. Independently tested to ASTM E84 (Extended 20 minutes) and ASTM E2768-11 standards by QAI Laboratories, it achieves a Class A fire rating with a Flame Spread Index (FSI) of 10 and a Smoke Developed Index (SDI) of 5—demonstrating superior flame and smoke suppression. ASTM E2768-11 meets the Wildland Urban Interface (WUI) code requirements in most jurisdictions and qualifies treated substrates as Ignition Resistant Material.
The formula penetrates deeply into the wood’s cellular structure, forming a durable internal barrier that significantly reduces flame spread and may prevent smoke generation. In addition to fire resistance, Ember Guard Pro enhances the wood’s dimensional stability—helping to prevent swelling, shrinking, and moisture intrusion, and can deter wood boring pests.
FEATURES
• Class A Fire Retardant (ASTM E2768 & ASTM E84 Extended) (FSI =10)
• Strong smoke suppression with an ultra-low Smoke Developed Index (SDI = 5)
• Clear & colorless but may deepen/enhance the natural color of the wood
• Structural stabilization & internal moisture control
• Non-toxic, water-cleanup, and zero VOC
• Permanent internal treatment — no reapplication needed in most circumstances
• Compatible with both interior and exterior applications
• Easy spray or brush application
• Compatible with LS PRO, LSS, DF stains for exterior/interior and Crystal Urethane for interior





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