Stone veneer can be installed using mortar or adhesive. For outside corners, you will need to use mortar. The process is relatively simple: 1. Cut the stone veneer to size using a wet saw. 2. Apply mortar to the back of the stone veneer and attach it to the corner of the building. 3. Use a trowel to smooth out the mortar and remove any excess. 4. Allow the mortar to dry for 24 hours before applying sealant or paint.

There are a few ways to install stone veneer outside corners. One way is to use a stone veneer corner guard. Another way is to use metal flashing or trim. The most common way, however, is to use mortar or adhesive.To install stone veneer outside corners using mortar or adhesive:1. Measure and mark the location of the corner on each stone. 2. Cut each stone along the marked line using a chisel and hammer or a wet saw. 3. Apply mortar or adhesive to the back of one of the stones and press it into place against the other stone at the corner. 4. Use a trowel to spread more mortar.