Which statement about primer coverage is accurate?

• A. Coverage should be biased toward the edges for better flow.
• B. Coverage must be in an equal and sufficient quantity over the entire surface.
• C. Coverage should be avoided on the surface entirely.
• D. Coverage must be done after the finish has cured.

Answer: (B)

The key idea is that primer must be applied evenly across the entire surface. When coverage is equal and sufficient everywhere, the primer creates a uniform base that seals the substrate, fills in pores, and promotes consistent adhesion and finish color. If coverage skews toward edges or is incomplete in spots, you’ll end up with patchy areas, uneven absorption of the topcoat, and possible adhesion problems or visible imperfections in the final finish. Primer goes on before the finish, and its job is to establish a level, uniform foundation, not to concentrate on any one area.