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.
Industries
Commercial Buildings
Industrial Plants
Infrastructure & Utilities
Residential Buildings
Power
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.
Standard/Test
Result
Fire Resistance
Up to 4 hours fire resistance
EXOVA BM
Tested at EXOVA BM (Trada, UKAS accredited) per EN ISO 10140-2:2010
Test Reports
Available upon request from CharCoat technical support
Fire Resistant: Protects up to 4 hours against fire and smoke.
Sound Insulation: Reduces noise by 62+ dB.
Eco-Friendly: Water-based, low VOC, EMICODE EC1PLUS certified.
Versatile Use: Bonds to concrete, masonry, steel, gypsum, glass, plastics, etc.
Flexible & Durable: Stays elastic for joint movement, lasts up to 30 years.
Fast Cure: Tack-free in 4 hrs, full cure in ~1 month.
Easy Apply: Smooth finish, paintable with most paints.
Firestopping joints and gaps in fire-rated constructions
Sealing around building service penetrations (e.g., electrical, plumbing, HVAC)
Acoustic sealing in walls and floors
Use in hollow floor slabs or gypsum boards with appropriate backing materials
Parameter
Value/Details
Fire Resistance
Up to 4 hours (EI 30 U/C, 45 U/C for PE conduits)
Application Method
Caulking gun, trowel, or brush; apply to clean surfaces
Coverage Rate
Varies by joint size; 2:1 width-to-depth ratio recommended (min. 12 mm depth)
Required Thickness (DFT)
Minimum 12 mm depth for optimal performance
Drying/Curing Time
Tack-free in 4 hours; full cure in ~1 month for fire performance
Color / Finish
Various colors, smooth finish
Packaging Sizes/Formats
Available in standard sealant cartridges (consult CharCoat for sizes)
VOC Content
4.64 g/L, water-based, EMICODE EC1PLUS compliant
Certifications
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.
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