Surface PreparationCâu 13 / 100
Loose, flaking paint on old siding should be handled how before recoating?
a.Painted over immediately to lock it down
b.Left in place because it improves adhesion
c.Covered with heavy caulk
d.Scraped and/or sanded to a sound, tightly adhered edge, then feathered smooth
Giải thích
New paint is only as sound as the surface beneath it, so loose and flaking paint must be scraped off to firmly bonded material. Edges are then sanded (feathered) to blend the transition. On pre-1978 homes this work must follow lead-safe practices.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Why should glossy or previously enamel-painted surfaces be 'de-glossed' before recoating?
- Bare ferrous (iron/steel) metal should be primed with what type of primer to prevent corrosion?
- What is the purpose of a primer/sealer on new, unpainted drywall?
- Why is it poor practice to paint over a wall contaminated with grease or oil?
- New galvanized (zinc-coated) steel often needs what preparation before painting to avoid adhesion failure?
- When patching a larger hole in drywall, why is joint compound often applied in multiple thin coats rather than one thick coat?
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