* Install standard corner bead on the straight lengths of the corners so it is 1⁄2" from the floor and 2" from the start of the arch.
* Flatten flexible vinyl bead along the archway to determine the length needed, then add 3". Cut two pieces of bead to this length, one for each side of the archway.
* Spray one side of the archway with vinyl adhesive, then spray the bead. Immediately install the bead—work from one end, pushing the bead tight into the corner along the arch.
Secure with 1⁄2" staples every 2". Trim the overlapping end so it meets the end of the straight length of corner bead.
* Variation: To substitute for flexible bead, snip one flange of standard vinyl bead at 1" intervals. Be careful not to cut into or through the spine.
