Bruce,

I work on the distribution side and focus primarily on driving specification with architects and engineers. Typically, I provide takeoffs only to trained commerical/residential installers in Texas (and occasionally Oklahoma). Most are ICF specialists that provide turn-key installations for larger commerical jobs and have over 1M square feet of experience each. One iof these installers also owns a company that provides turn-key work for smaller hotels (4 to 6 story) in Texas and Oklahoma. They do not frequent the forum although I think it would be beneficial. Generally, they are too busy. I am an advocate of specialist subcontractors because the only significant problems I see in the industry are due to lack of experience or installers working to make the residential to commerical transition. I know his does not specifically answer your question but hope it helps. Regards.