Aluminum soffits are pre painted, pre finished vented sections that provide air circulation from your eaves in to your attic preventing mold and mildew from accumulating. Moisture and heat flow upwards towards your roof vents and out of the attic making this a very important part of your roof’s ventilation system. Daily activities such as cooking and showering accumulate moisture causing humidity if this area is not properly ventilated. The trim board that follows the edges of your roof line is called fascia. The fascia provides a barrier between the roofs edges and outside elements. Your eavestroughs are attached to this trim board so it is important that this area is not rotting and is protected and strong to carry the large volume of water that pours into the gutters during a storm.