How do we perform a Dice Cut?

• A. One head cut followed by parallel cuts in between rafters
• B. Two head cuts
• C. Three head cuts
• D. A single cut across the deck

Answer: (B)

The dice cut is about isolating a small, defined block of roof decking between rafters so it can be removed quickly and safely to create a vent opening. The essential first step is to make two head cuts—one at each end of the intended opening. These two cuts establish the boundaries of the block you plan to remove, helping you control the size and shape of the vent and ensuring the piece breaks away in a predictable way.

Using exactly two head cuts sets up a clean, compact opening without overcutting. A single cut across the deck wouldn’t define the needed block, and adding more head cuts would risk enlarging the opening or compromising the surrounding structure. Three head cuts would be unnecessary and could create an unstable boundary. So the two head cuts approach is the efficient, reliable way to execute a dice cut.