How does cast iron’s porosity affect paint adhesion for outdoor ottomans?
Cast iron’s natural porosity can significantly impact paint adhesion for outdoor ottomans, leading to peeling, bubbling, and rust over time. The tiny pores in cast iron trap moisture, oils, and contaminants, which weaken the bond between the metal and paint. To ensure proper adhesion, thorough surface preparation is essential—sanding, degreasing, and applying a rust-inhibiting primer. High-quality, weather-resistant paints designed for metal surfaces also improve durability. Without these steps, the porous nature of cast iron may cause premature paint failure, especially in humid or rainy climates. Proper maintenance, including regular cleaning and touch-ups, can extend the lifespan of painted outdoor ottomans.
