What is the preferred finishing method for protecting outside corners of finished drywall?

The preferred finishing method for protecting outside corners of finished drywall is corner bead. Corner bead is a specialized product that provides structural support and protection for the edges of drywall at outside corners. It is typically made of metal or PVC and helps create a sharp, clean edge that is resilient against impacts, which is particularly important in areas prone to wear and damage.

Using corner bead ensures that the corner is not only well-defined but also less likely to chip or crack compared to methods like joint compound or mesh tape used alone. While joint compound can help smooth out and fill joints, it does not offer the same level of protection for outside corners. Mesh tape, on the other hand, is mainly used for taping seams between drywall sheets rather than for corner protection, and corner patches are typically used for repairs rather than new installations.

In summary, corner bead is favored because it provides both durability and an aesthetically pleasing finish to outside corners in drywall installation, leading to a more professional result.