White rings or cloudy marks appearing on wood veneer surfaces generally indicate moisture trapped within the finish, rather than damage to the wood itself. These blemishes occur when water, or another liquid, penetrates the protective topcoat, creating a visible discoloration. For instance, a glass of water left on a veneered table overnight might leave a distinct white ring.
Addressing these stains promptly is essential to preserve the veneer’s aesthetic appeal and prevent potential long-term harm. Left untreated, the trapped moisture can eventually damage the veneer adhesive, leading to bubbling or separation. The strategies employed for removing such blemishes have evolved over time, with techniques ranging from gentle heat application to the use of specialized cleaning agents.