How does the porosity of wrought iron affect paint adhesion on outdoor armchairs?
The porosity of wrought iron plays a critical role in paint adhesion, especially for outdoor armchairs exposed to weather elements. Wrought iron's natural porous structure allows moisture and air to penetrate, which can lead to rust formation beneath the paint layer. Over time, this compromises adhesion, causing peeling or flaking. To ensure long-lasting paint finishes, proper surface preparation—such as sanding, priming, and using rust-inhibitive coatings—is essential. High-quality paints designed for metal surfaces also improve durability. Understanding these factors helps maintain the aesthetic and structural integrity of wrought iron outdoor furniture.
