Water Damage Restoration Technician (WRT) Certification Practice Test 2026 – Your All-in-One Guide to Mastering the Exam!

Cupping is a notable indication of abnormal moisture levels in hardwood flooring. When moisture levels increase, generally from water exposure or high humidity, the edges of the boards are likely to absorb more moisture than the center. This causes the edges to swell, resulting in a concave shape where the center of the board remains lower than the edges, creating a cup-like appearance.

This physical change is a direct response to uneven moisture distribution within the wood, which is vital to recognize in the context of water damage restoration, as it can help identify the severity and source of the water intrusion. Understanding this phenomenon allows restoration professionals to address the underlying issues effectively, possibly salvaging the flooring by controlling the moisture levels and preventing further damage.

Other symptoms like warping, cracking, or sponginess can be associated with different conditions of wood flooring, but cupping is the specific indicator related to abnormal moisture levels, making it the most relevant choice in this context.