What is the role of the stop-end along edges in plastering openings?

• A. It increases edge corrosion resistance.
• B. It creates decorative lines at edges.
• C. It provides clean termination lines and joints to accommodate movement.
• D. It seals the opening permanently and prevents any movement.

Answer: (C)

Stop-ends along edges in plastering openings establish a clean termination line where the plaster stops at the jamb and also create a small movement joint. This lets the plaster and the substrate shift slightly without transferring stress to the edge, which helps prevent cracking, chipping, or raveling at the opening. The result is a crisp, neat edge around doors and windows and a durable finish that withstands settlement and shrinkage. It’s not about decorative lines, sealing permanently, or edge corrosion resistance.