What is the primary benefit of using short shank nails?

The primary benefit of using short shank nails is that they help to reduce nail pops. Nail pops occur when the nail comes loose from the material it is fastened to, which is often the result of movements in the materials due to temperature changes or settling of the structure. Short shank nails have a greater holding power in thinner materials, reducing the likelihood that they will pull out as the building settles or as other movement occurs. By minimizing the chances of nails working loose from the substrate, short shank nails can maintain the integrity of the finish over time.

Nail visibility and aesthetic appeal are factors that might be influenced by nail selection, but they are not the primary concerns addressed by using short shank nails. Additionally, while layering may be a consideration in some applications, it is not a direct benefit tied specifically to short shank nails and does not significantly relate to reducing nail pops. Thus, the most compelling reason for choosing short shank nails focuses on the performance aspect of preventing nail pops.