Metal and shingle roofs are common options for residential buildings. Metal roofs are typically made of large sheets of steel ...

Evaluate the roof’s slope and dimensions to determine the most efficient installation method. For residential installations, a solid substrate is essential beneath the metal roofing panels.

Can you avoid tearing off your old asphalt shingle roof by putting a steel roof over it? Maybe. Most codes now allow no more than two layers of roofing before requiring a complete tear-off.