Finish TradesCâu 428 / 700
When grouting ceramic wall tile with a sanded cement grout, why should the installer avoid using sanded grout in very narrow joints?
a.Sanded grout dries a different color every time
b.Narrow joints cure faster than the grout can be mixed
c.The sand particles can scratch delicate tile faces and may not pack well into hairline joints
d.Sanded grout cannot be used indoors
Giải thích
In very narrow joints, sanded grout can be hard to pack fully and its sand can scratch polished or soft tile faces, so unsanded grout is preferred for thin joints. Sanded grout does not change color randomly, joints do not cure before mixing, and sanded grout is commonly used indoors in appropriate joint widths.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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