What is roof sheathing typically applied for?

Roof sheathing is primarily applied to provide support for the roofing materials. It serves as a structural element that creates a solid base to which the roofing materials, such as shingles or tiles, can be firmly attached. This support helps distribute the weight of the roofing system and any potential snow load, making it critical for the overall stability and longevity of the roof structure.

While weatherproofing and directing water runoff are important functions associated with roofing systems, these aspects are primarily achieved through the roofing materials and installation techniques themselves rather than the sheathing. Aesthetic purposes do not typically describe the role of sheathing, as it is not visible once the roofing materials are installed and is not intended for decorative use.