Have spent two nights there - found a leak or two this morning in our torrential rainstorm - hooray for summer rains where I can do roof patching in a swimsuit. No more water ingress after the wet-patch was globbed on to the offending penetration (it was the gas line for the HVAC).
Did find a major crack between the cold-air-outlet duct and the air handler, so we are blowing cold air into the sky - will fix ASAP. The definition of P remains to be determined.
Much left to do, but now I don't have to drive to the jobsite!