Home/Metal Roofing
Standing seam and corrugated panel on houses, shops and outbuildings. A metal roof costs more the day it goes on and then stops being a problem for decades.
Why metal
Shingle is the cheaper start. Metal is the cheaper finish. In a town that gets hail every few summers and wind most of the year, a panel roof takes hits that would strip an asphalt roof back to the felt.
John fits standing seam where you want the clean lines and hidden fasteners, and exposed-fastener corrugated where the budget matters more than the look. Both get proper flashing at the valleys, the walls and the chimney, because that is where a metal roof leaks when somebody rushes the fitting.

Metal work






Over the top
Stripping a sound roof to bare wood costs money in labor and in landfill fees. If the decking underneath is solid and the local code allows it, John can run purlins over the existing shingle and fix the panel to those.
He checks the deck first. On a roof carrying two layers already, or one with soft spots, the old material comes off and the job starts clean.

Questions
John quotes both so you can see the gap, and tells you what your decking will take.