What factors influence how effectively fasteners hold shingles in place?

The effectiveness of fasteners in holding shingles in place is influenced by multiple interrelated factors, which makes the comprehensive option correct.

The type of fastener used is critical; different materials, such as galvanized nails, screws, or staples, have distinct properties, strengths, and resistance to corrosion that affect their longevity and holding ability.

Additionally, the holding power of the substrate—the material underneath the shingles—is vital, as it must have sufficient strength and integrity to support the fasteners. For instance, a solid plywood decking will provide a better grip than deteriorated particle board or OSB.

Fastener placement plays a significant role too. Properly spaced and strategically located fasteners are essential for distributing loads evenly across the shingles, thereby reducing the risk of wind uplift and ensuring that the shingles remain securely attached over time.

All these factors collectively determine how well shingles stay in place, underscoring the importance of considering each aspect during installation for optimal performance.