CHAR 21 – High-Performance Intumescent Coating for Timber Fire Protection
CHAR 21 is a low-VOC, waterborne intumescent coating designed to provide superior fire protection for timber and wood-based substrates. Its advanced formula combines high active solids content, exceptional char strength, and nanofillers, ensuring rapid development of a stable, insulating char that delivers long-lasting fire resistance.
Tested and certified to Euroclass B-s1-d0, CHAR 21 offers reliable fire protection while maintaining excellent environmental performance. It has been independently assessed and approved by EN 16000 (indoor emissions), ISO 89011-2 (VOC content), LEED, BREEAM, CAM, French VOC standards, and more.
Key Features & Benefits
Fire Protection: Achieves Euroclass B-s1-d0 on timber substrates ≥10mm.
Eco-Friendly: Very low VOC, tested and approved for sustainable building standards.
Application Versatility: Suitable for brush, roller, or airless spray.
Ease of Use: No primer required on bare timber; optional approved topcoats available.
Certified Performance: Complies with EN 13501-1 and EN 13823 standards.
Application Guidelines
For timber, apply 250g (200ml) per m² in a single coat to achieve the rating (always check wet film thickness during application).
Stir mechanically before use for smooth, consistent flow.
Can be thinned with up to 5% water if necessary (generally not required).
Brush/roller applications may require additional coats compared to spray.
Maintain correct environmental conditions during application and drying.
Primers & Topcoats
Bare Timber: No primer required.
Previously Painted Surfaces: Use Wall Primer 3500, thinned as directed, for proper adhesion.
Topcoats: Not required in C1 (internal warm dry environments) but may be applied decoratively (approval required). For C2 and above, an approved topcoat is mandatory.
Certification & Testing
Reaction to Fire: Euroclass B-s1-d0.
Standards: EN 13501-1, EN 13823:2020+A1:2022.
Certified for all wood and wood-based substrates (≥10mm) and all flammable substrates rated A2 or better, with performance achieved at 250 g/m².
For full specifications or technical support, contact [email protected].
IMPORTANT INFORMATION ON PURCHASING OF PASSIVE FIRE PROTECTION PRODUCTS NOTICE:
The information displayed about the products on this website is to be used for guidance ONLY. We advise that all customers contact our technical department to obtain a free no obligation specification and quotation before purchasing goods directly from the website.
Products purchased directly from our website without specification will NOT qualify for certification.
Please be aware that any negligence caused by failure to obtain the relevant advice, or availment of our specification and estimation service, will absolve International Passive Fire Ltd from any liability should Passive Fire Protection Products prepared, or used, by the purchaser, or any other parties, result in damage to property or human life, or for any monetary costs incurred due to incorrect usage.