Finish TradesQuestion 291 of 700
A metal corner bead is being installed on an outside drywall corner. Its main function is to:
a.Add fire resistance to the corner
b.Create a straight, durable, impact-resistant edge to finish the corner
c.Serve as the vapor barrier
d.Replace the need for joint compound at the corner
Explanation
Corner bead provides a straight, protected edge on outside corners that resists chipping and gives finishers a clean line to bed compound against. It is not primarily for fire resistance or vapor control, and compound is still applied over the bead.
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