Surface Preparation第 19 / 100 题
Why should exterior wood be checked for moisture content before painting?
a.Dry wood cannot be painted at all
b.Painting wood that is too wet traps moisture and causes blistering and peeling
c.Moisture makes the paint cure harder
d.Wet wood improves paint penetration
解析
Excess moisture in wood pushes outward as it dries and lifts the paint film, causing blisters and peeling. Wood should generally be below roughly 15% moisture content before painting. A moisture meter provides a reliable reading before coating.
免费刷完整 100 道题库 — 无需注册。
同考点相关题目
- When patching a larger hole in drywall, why is joint compound often applied in multiple thin coats rather than one thick coat?
- What is the main reason to remove dust after sanding and before painting?
- Knots and sap streaks in bare softwood can bleed through paint unless they are sealed with what?
- 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?
- Before applying an elastomeric coating to a stucco crack, what prep step is typically needed?