Surface Preparation第 14 / 100 题
Why is it poor practice to paint over a wall contaminated with grease or oil?
a.It makes the paint dry too fast
b.The contaminant prevents adhesion, causing the paint to peel or fisheye
c.It permanently changes the paint color
d.It increases the film thickness needed
解析
Grease and oil act as a bond-breaker, so paint cannot adhere and may crawl into 'fisheyes' or peel. Surfaces such as kitchen walls should be degreased with a suitable cleaner and rinsed before priming. Clean, dry, dull, and sound is the standard rule for a paint-ready surface.
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