How far should siding be separated from the roof's surface?

The appropriate separation distance between siding and the roof's surface is typically 1 to 2 inches. This gap is crucial for allowing proper drainage and for preventing moisture accumulation that can lead to decay, mold, or other damage to both the siding and the underlying structure. If the siding is installed too close to the roof, it may trap water and facilitate a pathway for moisture to seep into the wall system, which can result in significant structural issues over time. Adequate spacing not only promotes ventilation but also helps in ensuring that the siding material remains intact and performs its protective function effectively.