Metal roofs can be noisy, especially when there is a lot of rain or hail. This problem is usually solved by adding more insulation during the installation process, but this can be expensive.
Fremont, CA: If you're constructing a new house or repairing an old one, there are several roofing materials to choose from. Metal roofs, however, can be an appealing choice regardless of your roof type due to their durability, low maintenance, and energy efficiency. You can choose from tin, zinc, aluminum, copper, or galvanized steel. But make sure your metal roofing material has been checked and labeled by UL, FM Global, or the equivalent, and that you double-check any code specifications with your local building department.
Metal roofs, despite their many benefits, can have some disadvantages, and these are:
Performance. Water can cause significant damage to a roof if it collects anywhere on it due to poor installation or repair. Low-grade metals can also be lighter and less durable than higher-grade metals.
Some metals rust more quickly in certain climates or dent more easily during hailstorms or installation than others.
Affordability. Metal roofs can cost up to two or three times as much as other forms of roofing. While a metal roof has a much longer lifetime, you can invest in one only if you wish to remain in your home long enough to reap the financial benefits.
Noisiness. Metal roofs can be noisy, especially when there is a lot of rain or hail. This problem is usually solved by adding more insulation during the installation process, but this can be expensive.
Inconsistency of color match. It can be hard to find an exact match to the original metal if a replacement is needed or a home extension is added years later.
Expansion and contraction. Large panels of metal roofing material tend to expand and contract. The panels can loosen if they are not correctly installed with fasteners that allow the metal to "breathe."