Why Does Vinyl Siding Get Chalky? Causes and Fixes

why does vinyl siding get chalky

Vinyl siding gets chalky because ultraviolet radiation and oxygen gradually weather the thin, pigmented PVC surface, releasing fine particles that remain as a white or gray powder. Heat, strong sun exposure, dark colors, age, and inferior weathering protection can accelerate the process, while dirt or mildew can create a similar-looking film that requires a different […]