2026-01-12
One of the most frustrating moments in a construction project is discovering you are short on materials because of a simple calculation error. When purchasing metal roofing, the numbers on a specification sheet can be misleading; a panel listed as “39 inches wide” rarely covers 39 inches of your actual roof deck. This critical discrepancy between total physical width and effective coverage width is a primary cause of ordering errors, unexpected budget overruns, and significant installation delays.