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Metal roofs last for between 50 and 70 years, and asphalt roofs last for between 20 and 25 years, with some lasting as long as 30 years. In most cases, you’ll get double the life or more out of a metal roof than you would from a shingle roof, which helps make the higher cost of a metal roof more manageable.

Just like when you’re shingling a roof, you can install felt underlayment under a metal roof, but a synthetic underlayment like adhered ice and water shield is the best option. These use adhesives rather than mechanical fasteners, so you have fewer penetrations going through your roof deck and a lower risk of leaks. Ice and water shield is also easier to install because you don’t need additional tools or fasteners to attach it to the roof deck.

Shingle damage comes in many forms, and the damage usually depends on the wind speed and the shape of the roof before the winds. Typically, when shingles are damaged by wind, they become torn, creased, or detached from the roof. Some might go missing entirely. More extensive roof damage might occur if a tree branch or other debris has fallen onto the roof as a result of the windstorm.

The green coloration that develops on copper roofs is called a “patina,” and it’s a result of mild oxidation on the surface. The oxidation process is not harmful to your roof. In fact, the surface corrosion acts as a protective layer and won’t spread to the core of your copper roof materials. The discoloration will progress much more quickly in damp or humid climates than it will in dry climates. If you don’t like the green color, you can seal your roof to preserve the shiny, rose-gold look.