Why Waterproof Underlayment Matters More Than the Metal Roof Itself
When homeowners invest in standing seam copper roofing, steel roofing, or any premium metal roofing system, the focus is usually on what you can see – the panels, the seams, the flashing details, and the finished look. But the truth is, the long-term performance of copper roofing and sheet metal roofing depends heavily on what you can’t see: the waterproof underlayment underneath.









