CSLB C-33 Painting & DecoratingSurface PreparationEasy
A painting contractor is preparing an interior for painting, specifically a large, newly installed window. To prevent paint from getting on the glass and frame, what is the most efficient and effective masking strategy?
- AApply painter's tape to the frame, then attach masking paper or plastic film to the tape to cover the glass.
- BCover the entire window opening with a large drop cloth and secure with tape.
- CCarefully apply painter's tape around the perimeter of each pane.
- DUse masking fluid directly on the glass panes.
Show answer & explanationAnswer & explanation
Correct answer: A. Apply painter's tape to the frame, then attach masking paper or plastic film to the tape to cover the glass.
The most efficient and effective masking strategy for windows is to first apply painter's tape neatly to the perimeter of the window frame where it meets the glass, then attach masking paper or plastic film to the tape to quickly cover the larger glass area. This provides a clean edge and full protection.
Why the other options are wrong
- B. Covering the entire opening with a drop cloth is imprecise and inefficient for achieving clean lines on the window frame itself.
- C. Taping only the perimeter of the glass doesn't protect the majority of the glass surface from drips or overspray.
- D. Masking fluid is typically for small, intricate areas and not efficient for large window panes.
Window Masking
The process of protecting window glass and frames from paint during interior or exterior painting.
- Uses painter's tape for clean edges.
- Masking paper or plastic film covers large areas.
- Proper application prevents drips and overspray.
Memory trick: Tape the edge, then cover wide, for a clean paint ride.