EXPANDER - FR is a suspension of non-flammable substances and modifying additives in a synthetic resin. It has a milky color. Once it is applied to the surface and dries, it creates a transparent colorless coating. Under the effect of high temperatures, the coat starts to swell, creating a foamy insulation layer. Once it is fully dry, the EXPANDER - FR coat is covered with a nitrocellulose varnish called CAPON.
EXPANDER - FR is intended for the fire-retardant protection of construction elements made of wood or wood-based materials (particle board, plywood, OSB board, etc.) used indoors in residential and public buildings, where the relative air humidity does not exceed 70%. The product has the ITB technical approval, the Polish National Certificate of Conformity, the Declaration of Conformity and the PZH (Polish National Institute of Hygiene) Certificate.
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