Thanks, Peggy. That link (http://schoolroofingscam.blogspot.com/) lays it all out in detail, with extensive documentation.
I learned of this roofing scam several years ago from a roof manufacturer’s rep, who tipped me off about Garland and Tremco (both of which are mentioned extensively by name at that website), which reportedly played the same game as his own company. Garland had been providing free “consulting” services directly to a city department for a warehouse re-roofing project, before the owner realized it ought to get an architect (my client) involved. (The owner handed the project off to the architect saying she could use Garland’s “consulting” services, or not–her choice.)
It’s a long story–too long to tell here–but in the end, after several addenda and roof spec revisons, and a frank meeting with three rather glum Garland, Tremco and Hickman reps and our roofing consultant (who was hired to consult only on detailing, not specs), and after the bids were in, I was told that our revised and (finally) non-proprietary spec probably saved the owner about $50,000.