Definition - What does Colorfast mean?
This is a term used to describe a product or material that has the ability to maintain its color by resisting fading and wearing off. It is used in describing coatings that are durable and provide a multi-layered membrane of protection against corrosion. It also describes coating systems that are resistant to fading and chalking.
Corrosionpedia explains Colorfast
Though metallic-based pigments have been in use in metal roofing paints, ceramic and inorganic pigments have proved to be the best components for coating formulas. These pigments are selected on the basis of the atmospheric condition. They may be natural or synthetic additives, but carbon compounds are known to offer optimum performance in terms of corrosion shielding.
Colorfast coating systems provide layers of pigments that form the Galvalume/galvanized, primed, pre-treatment and top coats. They are mostly designed to reflect the infrared and UV rays, thus resisting color change. Through a color test, the following results are used to evaluate its performance:
- Humidity resistance
- Corrosion resistance
- Abrasion resistance
- Fading resistance
- Chalking resistance
- Chemical resistance
A good paint consists of the resin, pigment and solvent. When the solvent has dried up, it is expected that the pigment ought to remain at the bottom of the layer and thus shielded from UV rays. Colorfast products come with a warranty of over 30 years.