Roofs with a pitch below 2:12 (low-slope roofs) will use waterproofing membranes. The two common types are asphaltic “built-up-roofing” or “single ply membranes” made from plastic or rubber sheets.
[pdf] Because solar panels have been exposed to the elements for several decades, they need to resist water damage as possible. All home solar panels are waterproof.
[pdf] There are four main control strategies that appear in literature: rule-based control (RBC), optimal control, agent-based modeling (ABM), and model predictive control (MPC).
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