CHAR 17 is a waterborne intumescent clear coating, providing a very effective fire barrier with fast activation at low temperature. When activated by a fire, the thin transparent film develops a coherent char particularly suitable for fire protection of flammable substrates. CHAR 17 is used for fire protection of wood and other flammable substrates, while preserving their natural appearance.
CHAR17 achieves Euroclass B-s1-d0 on wood-based substrates of 10mm or more.
Application
CHAR17 is designed for fire protection of wooden structures and panels in interior environments and which are not subjected to strong wear and tear, e.g. beams and columns, boards, studs and joists, decorative panels or walls.
Prepare surface for intumescent by removing existing coatings. Oiled or waxed timber is to be spot-checked prior to application to ensure full adhesion and clarity of final product. Oil/wax must be fully dry in accordance with manufacturer instructions to prevent
CHAR 17 base is applied in two coats of 125ml per 1m2. Each 1L tin will protect 4m2 of timber. Best results are achieved with a fine or small pile roller. Care is to be taken when applying by brush to ensure even application.
CHAR 17 is not to be applied externally or in areas of high humidity.
Wood moisture should be lower than 15% to avoid the risk of formation of white spots. Drying times are strongly dependent on film thickness, ambient temperature and especially ambient moisture.
Temperature should be within 15°C and 35°C, relative humidity should not exceed 70%. Coated surfaces should not be handled by bare hands until fully dried, then top coated to avoid fingerprints.
Topcoat
CHAR 17 must be protected with CHAR 17 Finish on the same day as initial application. Any delay to topcoat application will risk humidity affecting the final finish. For best results apply with a fine or short pile roller at 50ml per 1m2 or 20m2 per Litre.
Certification:
CHAR 17 is achieves a reaction to fire rating; Euroclass B-s1-d0.
Available certificates and test reports are in accordance with European fire standards. Reaction to fire test according to EN 13501-1. Classification tests are performed according to EN ISO 11925-2 and EN 13823 on wood particleboard rated according to EN 312-2.
Test report:
Therefore, according to EN 13823 paragraph 5.2 results apply to all types of wood and wood-based substrates and also on all flammable substrates rated A2 or better. This performance is achieved with 300 g/m2 active layer. A number of recent cone calorimeter tests have shown excellent fireproofing performance of several polymers including HIPS, unsaturated polyesters, epoxies and others.
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.
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