A high-performance, intumescent firestop sealant delivering up to 4 hours of fire resistance for critical penetrations and joints.
CharCoat IS is a water-based, intumescent firestop sealant designed to prevent the spread of fire and smoke through openings in fire-rated walls and floors, including service penetrations. It maintains acoustic performance and provides a flexible, durable seal for joint movement. With a robust intumescent char formation under fire exposure, CharCoat IS ensures reliable fire protection for up to 4 hours.
Core Technology: Intumescent sealant that expands at approximately 180°C to form a fire-resistant char, sealing gaps and penetrations effectively.
CharCoat IS is a water-based, intumescent firestop sealant designed to prevent the spread of fire and smoke through openings in fire-rated walls and floors, including service penetrations. It maintains acoustic performance and provides a flexible, durable seal for joint movement. With a robust intumescent char formation under fire exposure, CharCoat IS ensures reliable fire protection for up to 4 hours.
Core Technology: Intumescent sealant that expands at approximately 180°C to form a fire-resistant char, sealing gaps and penetrations effectively.
CharCoat IS cures upon exposure to atmospheric conditions, forming a flexible seal that accommodates joint movement. When exposed to fire, the sealant undergoes thermal activation at around 180°C, expanding to create a robust, intumescent char that blocks the passage of fire, smoke, and toxic gases for up to 4 hours. Its high sound insulation properties further enhance its suitability for fire-rated walls and floors. The product can be used with backing materials like stone wool to optimize performance and reduce shrinkage during curing.
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Standard/Test
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Result
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Fire Resistance
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Up to 4 hours fire resistance
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EXOVA BM
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Tested at EXOVA BM (Trada, UKAS accredited) per EN ISO 10140-2:2010
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Test Reports
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Available upon request from CharCoat technical support
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Parameter
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Value / Details
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Fire Resistance
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Up to 4 hours (EI 30 U/C, 45 U/C for PE conduits)
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Application Method
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Caulking gun, trowel, or brush; apply to clean surfaces
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Coverage Rate
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Varies by joint size; 2:1 width-to-depth ratio recommended (min. 12 mm depth)
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Required Thickness (DFT)
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Minimum 12 mm depth for optimal performance
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Drying/Curing Time
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Tack-free in 4 hours; full cure in ~1 month for fire performance
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Color / Finish
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Various colors, smooth finish
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Packaging Sizes / Formats
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Available in standard sealant cartridges (consult CharCoat for sizes)
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VOC Content
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4.64 g/L, water-based, EMICODE EC1PLUS compliant
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Certifications
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ETA per ETAG 026-2 and 3, EN ISO 10140-2:2010, EMICODE EC1PLUS
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CharCoat IS is water-based, non-toxic, halogen-free, and low VOC for a safer work environment and easier regulatory compliance.
