Mold is caused by water, and thanks to a watertight seal in your metal tiles, there won’t be water collecting under your roof. Plus, a ventilated air space between your roof and ceiling mean any moisture can evaporate easily. This means you won’t have to worry about mold breaking down your roof and ruining your home. Breathe easier and safer under a roof that won’t endanger your family or pets, and won’t cause damage.