green building

This really is old news, but it seems so significant that it’s worth a posting. In January, the National Association of Home Builders unveiled its final version of the NAHB Green Building Standard. It has been accepted as an ANSI standard. Thus, it is no longer a guideline, but a standard with ANSI status. The remarkable thing about this standard is its position on radon. It is mandatory that buildings located in Zone 1 have radon control measures (in accordance with ICC IRC Appendix F). If a passive system is installed the builder garners 10 points