The answer to 'what causes fascia' is that fascia is the horizontal board that runs along the roofline of a home, connecting the lower edge of the roof to the exterior walls. Fascia serves several important functions, including:
Water Management - Fascia helps direct water runoff from the roof and away from the home's walls and foundation. It provides a barrier to prevent water damage.
Structural Support - Fascia helps support the weight of the roof and provides a secure attachment point for the roof's gutters and downspouts.
Aesthetic Appeal - Fascia is a visible exterior component that contributes to the overall look and style of a home. It can be made from various materials like wood, vinyl, or aluminum.