On 2006-09-17, Buck Turgidson wrote:

Does the fact that he has HW floors make a difference in foam
insulation, i.e. is it a fire code violation since there is no
fire-resistant covering over the foam? Or does that apply just to
walls?

My understanding is that the building code specifies that a thermal
barrier is required between the foam and the living space, and that
1/2" of gypsum board is a thermal barrier, but that it doesn't
enumerate all possible thermal barriers. So some jurisdictions accept
alternate thermal barriers, e.g. 5/8" of wood, in which case the
subfloor and HW floor would presumably be sufficient.

Cheers, Wayne