Core TradesCâu 115 / 700
Around a new window, the correct flashing sequence to integrate with the WRB is generally:
a.Head flashing first, then jambs, then sill
b.All four sides at once with sealant only
c.Sill flashing first, then jambs, then head flashing lapped over the WRB above
d.Only the head needs flashing
Giải thích
The proper shingle-lap sequence is sill pan flashing first, then jamb flashing over the sill, then head flashing with the WRB above lapping over the head flashing, so each layer sheds onto the one below. Doing the head first, all at once with sealant, or head-only all trap water.
Trích dẫn luật: 2025 CA Building Code / CRC (Weather Protection)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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