The answer to 'what causes soffit' is that soffit is the material that covers the underside of the roof's overhang, and it can become damaged or deteriorated over time due to a few common causes. Exposure to the elements, like rain, sun, and wind, can cause the soffit material to crack, warp, or peel. Moisture buildup, often from poor ventilation or leaks, can also lead to rotting or mold growth on the soffit. Additionally, pests like birds, squirrels, or insects can chew through or nest in the soffit, causing holes and damage.
Maintaining the soffit is an important part of roof maintenance, as a damaged soffit can allow more moisture and pests to enter the attic or home, leading to further issues. Regularly inspecting the soffit and addressing any problems quickly can help prevent more serious damage down the line.