1. Mount pre-finished steel base hard against roof deck. At this time, outline base and cut hole in roof deck, if ventilation is required. Level from corner to corner with a four foot level. Fasten steel base through flaps to roof deck with provided 1 1/4" deck screws.
2. Install all base flashings tight against the steel base. Make sure that corner flashings are vertical and tight or copper skirt will not fit properly. You may roof in base at this time.
3. Set copper base skirt over steel base and flashings.
4. Set copper base top over base skirt.
5. Set louvered mid-section on top of base. Align louvered section's corners over the black tabs found on base top. Handle louvered mid-section at corners, not at center of louvers or face plates, copper will bend easily.
6. Secure louvered mid-section to base, with eight #10 1" stainless screws, through the black tabs and into base. (stainless screws provided)
7. Mount copper cupola cap on louvered mid-section, and drill for rivets at corners on at least two sides. (using 1/8" bit provided)
8. Rivet the cap to the mid-section with the copper rivets that were provided.