Four questions that come up on a property where the metal is already there.
Coat it, rework it or replace it is the decision most owners here are actually facing, and it turns on the condition of the panel rather than its age. The guide on putting metal over existing shingles is for the other direction. Reading a metal quote covers the lines that separate a real specification from a number on letterhead. And the property guide is for the places with more than one roof, where the house is rarely the urgent one.