Metal roofing starts with a tear-off down to the roof deck, then fresh underlayment under every panel. High-temp synthetic underlayment runs across the field, and self-adhered ice-and-water shield protects the valleys and eaves where Nor'easter rain backs up.
A standing-seam panel hides its fasteners under the seam, so salt air from the Atlantic never sits on a screw head. Exposed-fastener panels cost less up front, but on a home near the water we usually point you toward concealed clips instead.
Aluminum resists salt corrosion, stone-coated steel from ATAS or Decra mimics shake or tile, and McElroy Metal standing-seam steel carries a PVDF finish rated for 40 to 50 years. We close every roof with a ridge cap, drip edge at each eave and rake, and ventilation that keeps insulation dry through humid summers.
