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24-gauge metal is thicker and will stand up better to impact, so it’s a better option for roofs that will see heavy snow and ice accumulation, hail storms, fallen tree debris, and blown debris. It’s a more expensive option, but it’s worth the added cost for roof longevity in extreme climates. If you live in a more moderate climate and don’t have trees overhanging your roof, 26-gauge metal is suitable and is a more affordable option.

Generally, magnets do stick to a metal roof, though certain metals may not be magnetic. In that case, you can use self-adhesive hooks designed for outdoor use or plastic clips that hook onto your gutter or the edge of your roof. But if your metal roof is made of steel, aluminum, or copper, you're in luck—those are all magnetic metals.

Costs vary by repair scope, materials needed, and labor, with average repairs ranging from $300 to $1,000, contingent on roof size.

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.