Fascia and soffits add a finished look to your roof and promote a healthy roof system. A well-ventilated fascia/soffit system prevents moisture from building up under the roof and in the attic. A secure system keeps pests, like birds and bats, from nesting in the eaves. That’s why it is better to use vinyl soffit for your overhangs instead of wood or fiber cement. Vinyl soffit also comes ventilated, so you could go over existing vents - if doing new construction, you could install vents wherever needed. For fascia, it is better to use aluminum PVC trim coil. The company installing your vinyl soffit and fascia must have a metal brake. A metal brake is used to custom bend aluminum to match all trim and fascia your home has.