What type of shingles is solid sheathing most commonly used for?

Solid sheathing is most commonly used for composition shingles due to the design and installation requirements of these roofing materials. Composition shingles, which include asphalt shingles, are typically installed in layers and require a smooth, solid surface for proper placement, waterproofing, and support. The solid sheathing provides this necessary foundation, ensuring that the shingles are securely attached and that they work effectively in shedding water and withstanding weather conditions.

In contrast, other types of roofing materials like wood shingles, metal roofing, and slate shingles may not rely on solid sheathing to the same extent. Wood shingles often need ventilation and may be installed over spaced sheathing to allow for air circulation, thus preventing moisture-related issues. Similarly, metal roofing can be affixed directly to a variety of substrates that may include battens or purlins, without always requiring solid sheathing. Slate shingles, being heavier and more rigid, also often require specific installation methods that may involve different structural considerations rather than standard solid sheathing.