How to Identify Oxidation on Siding: Swipe Test Guide

Vinyl siding oxidation is surface weathering that produces a dull finish and chalky residue after prolonged ultraviolet exposure, heat, oxygen, and outdoor pollutants affect the PVC surface. To identify it, inspect dry panels for directional fading, compare sun-exposed and shaded areas, then swipe a dark cloth across the siding and check for loose white or […]