Soffit is the exposed siding underneath your roof’s overhang, while fascia is the area of siding directly above the soffit. It’s the exposed board you see on the front of your roof’s overhang and the area where the gutters are attached. Installing these two roofing components together helps prevent mold and mildew resulting from moisture to enter your home’s rafters. Soffits and fascias also increase air ventilation and protect the areas of your home that are difficult to cover with paint. Both soffit and fascia can be made of aluminum, wood or vinyl, though the best option is usually vinyl.