Updated versions of the Precautionary List and Building Materials Transparency web site were released earlier this month.
The Precautionary List, first released in 2008, and the Transparency web site, released in 2011, is intended to foster the movement toward the use of healthier building materials. Both were developed by global design firm Perkins+Will.
The enhanced Precautionary List—a compilation of the most prolific and problematic substances that people encounter in the built environment—is now a user-friendly digital database rather than a static list. The user experience on the Transparency web site is “more refined and the site navigation is more intuitive and mobile-friendly,” according to a news release by the architecture firm.
The tools now include a Watch List and a Sunset List. The Watch List includes substances suspected of being harmful, but where scientific data about their health impacts has only begun to accumulate. The Sunset List includes substances previously on the Precautionary List, but now seldom or no longer in use.