Surface PreparationCâu 22 / 100
Before applying an elastomeric coating to a stucco crack, what prep step is typically needed?
a.Wetting the crack with solvent
b.Cleaning and filling/bridging the crack and ensuring the surface is sound and dry
c.Applying gloss enamel first
d.Sanding the entire wall to bare masonry
Giải thích
Elastomeric coatings bridge hairline cracks but the substrate must first be clean, sound, and dry, with larger cracks filled or reinforced. Loose material and contaminants would cause the thick coating to fail. Proper prep lets the elastomeric film stretch over the crack without delaminating.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Why should exterior wood be checked for moisture content before painting?
- What is 'feathering' when preparing a spot repair on a painted surface?
- When dry-cutting or grinding concrete during prep generates dust, what airborne hazard is of concern under Cal/OSHA?
- Why is it important that a masonry surface be fully cured before painting with most coatings?
- A previously painted surface shows widespread peeling down to bare wood. What does this MOST likely indicate?
- What is the correct order of the basic surface-prep steps for a typical repaint?
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Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-33 Painting & Decorating Trade Exam · Quy trình kiểm tra