Green roof construction can be complex and involve many different trades working in a small space. A pre-construction meeting is recommended prior to beginning any construction on the roof to ensure construction sequencing will maximize efficiency and minimize conflicts between the various trades that need to access the roof. The meeting should include all green roof related installers and designers. Installers present at the meeting should include roofing, green roof, irrigation, leak detection, lightning protection, electrical, glaziers, mechanical, and general contractor, as well any others involved in the green roof project. Designers should include roofing consultant, green roof designer, irrigation designer, electrical and mechanical engineers as well any others involved in the green roof project.
Key factors in determining construction sequencing include the following.