How do protective coatings on wrought iron outdoor chairs degrade over time?
Protective coatings on wrought iron outdoor chairs degrade over time due to exposure to environmental factors such as UV rays, moisture, temperature fluctuations, and physical wear. Initially, the coating—often powder or paint-based—acts as a barrier against rust and corrosion. However, prolonged sun exposure breaks down the coating's polymers, causing fading, chalking, and brittleness. Moisture, especially in humid climates, seeps into microscopic cracks, leading to rust formation beneath the surface. Temperature changes expand and contract the metal, further cracking the coating. Regular cleaning, touch-ups, and applying sealants can slow degradation, but eventual recoating is necessary to maintain durability and aesthetics.
