eprice- I agree with you on your statement with respects to the IRC. We have the MRC here in Michigan and it is basically the IRC with the Michigan twist on it. The issue we have run into is that we still have inspectors who insist that the contractors use fire rated material (fire caulk) when it is rather obvious that since it is not a fire rated wall or assembly that a fire rated material is not necessary. There are several cases in the IRC/MRC that address using fiberglass insulation as a fire blocking material. To lazy to give code references but I can and will if someone is interested.
