Finish TradesCâu 291 / 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
Giải thích
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.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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