Building Codes for Insulation?

[Unregistered]

Where can I find building codes for insulating exterior walls ?

My county is Niagara County.

[flickit]

Where can I find building codes for insulating exterior walls ?

My county is Niagara County.
...county building inspector and ask them. Some states are very touchy and some counties even more so. Walls are generally R-13 minimum unless 2x6's were used, then they would want a minimum of R-19. Either would require a moisture barrier nearest the living space.