How does drying timeline differ between Category 1, 2, and 3 water losses in a commercial building?

“Category 1 losses — clean water from a supply line or roof drain — typically reach drying goals in 3–5 days in a commercial structure, assuming prompt equipment placement and no hidden migration. Category 2 losses, which involve gray water with some contamination, often require selective demolition of affected materials before drying begins, pushing the timeline to 7–10 days.”