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Fire safety is one of the most critical considerations in any residential, commercial, or industrial building. While most people think of sprinklers, alarms, and extinguishers as the primary components of fire protection, ducts and ventilation systems also play a major role in controlling how fire and smoke spread.
This is where fire retardant coating for ducts becomes essential.
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www.ameetuff.com Fire Resistant Coating for Duct Whether you are dealing with HVAC ducts, kitchen exhaust ducts, electrical ducts, or GI sheet metal ducts, applying a certified fire retardant coating can significantly enhance building safety, meet fire safety regulations, and reduce the risk of catastrophic fire damage.
Fire Retardant Paint for Ducts In this article, we’ll explore what fire retardant coating for ducts is, how it works, its advantages, and why it is now a standard requirement across industries.. What Is Fire Retardant Coating for Ducts? Fire retardant coating for ducts is a specialized protective material applied to the external or internal surface of ducts to prevent fire spread, reduce heat transfer, and contain smoke. These coatings are typically intumescent, meaning they expand when exposed to high temperatures and create an insulating char layer
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Fire Retardant Paint for Ducts This expanded layer protects the metal duct from: Excessive heat Fire penetration Structural distortion Smoke leakage
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Fire Retardant Paint for Ducts Why Do Ducts Need Fire Protection? Ducts run across the entire building, connecting multiple rooms and floors. In the event of a fire, they can act like channels, allowing fire and smoke to travel rapidly.
Here’s why fire retardant coating is crucial: 1. Prevents Fire Spread Fire can travel through unprotected ducts, especially in kitchen exhaust systems, where grease deposits can ignite quickly.
2. Maintains Structural Integrity Metal ducts can weaken or collapse under extreme heat. Fireproof coatings slow down heat transfer, giving occupants more time to evacuate. 3. Compliance with Fire Safety Regulations
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fire retardant coating Many jurisdictions mandate fire-resistant treatment for ducts under:
NFPA standards BS 476 Part 24
UL classifications Local building codes
4. Protects HVAC Systems HVAC ducts are vulnerable during fire outbreaks. Fire retardant coating helps ensure that the ventilation system does not circulate smoke throughout the building. 5. Reduces Smoke Leakage Intumescent coatings seal duct openings, reducing smoke migration and improving overall fire containment.
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Types of Ducts That Require Fire Retardant Coating
Fire retardant coatings are used across different duct types in industrial and commercial establishments: 1. HVAC Supply and Return DuctsThese ducts circulate air across the building, so applying fire-resistant coating helps prevent smoke movement.
2. Kitchen Exhaust Ducts High-risk ducts with grease deposits—these are mandatory in hotels, restaurants, and industrial kitchens.
3. Pressurization and De-pressurization Ducts Used in staircases and fire exits; must be fire-protected to maintain airflow during emergencies.
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Types of Ducts That Require Fire Retardant Coating Fire retardant coatings are used across different duct types in industrial and commercial establishments: 4. Electrical and Cable Ducts: Protect wiring pathways from fire exposure and reduce the chance of short-circuit-driven fire spread.
5. GI Sheet Metal Ducts Galvanized iron ducts are widely used but heat-conductive. Fire coating improves their fire rating.
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Fire retardant coatings for ducts How Fire Retardant Coating Works Fire retardant coatings for ducts are usually of two types:
1. Intumescent Coating • Expands 20–50 times its original thickness when exposed to fire. • Forms a thick, foam-like char layer that insulates the duct from heat. • Ideal for achieving 1-hour to 3-hour fire ratings. Meets fire resistance classification (up to 240 minutes)
2. Cementitious / Non-Intumescent Coating Forms a solid protective barrier. Suitable for industrial ducts requiring robust thermal insulation. Performance Features -• Delays ignition • Reduces heat conduction • Maintains duct stability • Prevents fire from entering/exiting the duct • Blocks smoke
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