Metal Roofing: frequently asked questions
These answers are general. For your situation, check the official sources listed below or ask a professional.
How long does a metal roof last?
Often 40 years or more, depending on the system and the climate.
Is a metal roof noisy?
With a solid deck and underlayment, usually no louder than other roofs.
Can metal go over shingles?
Sometimes, if the code and the manufacturer allow it; many roofers remove old shingles first.