What is the name of the application method when plies are laid parallel to the slope due to steep slope?

What is the name of the application method when plies are laid parallel to the slope due to steep slope?

• A. Laying the plies
• B. Strapping the plies
• C. Parallel ply method
• D. Slope-parallel installation

Answer: (B)

On steep roofs, sheets tend to slide as you work, so a securing method is used to keep each layer in the right place while you install it. Strapping the plies means placing temporary straps or fasteners to hold each layer level and parallel to the slope. This prevents movement, helps you maintain correct alignment and overlap, and supports a clean, consistent installation until the glue or asphalt sets. The other terms describe the orientation or a generic action without naming the technique used to control movement on a steep slope.

On steep roofs, sheets tend to slide as you work, so a securing method is used to keep each layer in the right place while you install it. Strapping the plies means placing temporary straps or fasteners to hold each layer level and parallel to the slope. This prevents movement, helps you maintain correct alignment and overlap, and supports a clean, consistent installation until the glue or asphalt sets. The other terms describe the orientation or a generic action without naming the technique used to control movement on a steep slope.