|The intumescent paint system comprises basecoat
applied to correctly prepared and compatibly primed surface,
protected with a top sealer.
Intumescent coatings are applied
to the substrate as a thin layer. When the temperature increases
(usually above 200°C) the ingredients
undergo a chemical reaction and produce an expanded char with a
volume many times that of the original coating.
This char has low thermal conductivity and insulating
properties, thus providing thermal protection to the substrate.