Then he said it would cost me an extra $15,000 and an extra week to do it my way, citing custom framing versus slapping up trusses. Basically, this tells me that he really doesn't want to do it. When I asked about spray foam insulation, his reaction was "it'll raise the insulation cost 30%". Fiberglass insulation is really really cheap, So I'm not surprised the price will go up. My guess is the extra insulation will pay for itself within 4 years.
I'm just not sure I'm going to get what I want. Maybe it's time to think about doing it myself?