xtrememetals

  Exposed Fastener or Standing Seam   This choice shapes cost, appearance, and how much maintenance the roof needs later. Exposed fastener panels, the R-panel and corrugated styles, screw straight through the face of the metal. They cost less and go up faster, but each screw carries a rubber washer that stiffens and shrinks somewhere around year twelve, which means a retorquing pass eventually.   Standing seam hides its fasteners under clips, costs considerably more , and lets the panel expand and contract without dragging on anything. Most metal roofing supply Flint TX ord e rs lean toward exposed fastener for outbuildings and standing seam for houses, though budget usually has the final word.   Fasteners Fail Long Before Panels Do   The panels will outlast the screws holding them down, which surprises people who assume metal is metal. Two things go wrong. Screws land on the rib instead of the flat, where they can't seat properly against the surface, or t...