GOOD DIRECTIONS, INC. CUPOLA INSTRUCTIONS 4. Determine your Roof Pitch Nail two boards together so they pivot, Straddle the tool with each board as shown. Make sure that each side is flat against the roof and the center is at the center of the peak. Mark the boards with 2 pencil. This becomes your lusting template, 4 Drill hives to secure cupola ta 2 x4 pieces screwed crouton (see step 3). 2.