When was asbestos banned for most construction applications in the U.S.?

The correct answer is 1978 because this is when the U.S. Environmental Protection Agency (EPA) issued a significant rule banning the use of asbestos in many construction materials. Specifically, the EPA's ban targeted the use of asbestos in new products and applications, including spray-on insulations and certain types of building materials. Although some uses of asbestos continued in specific applications beyond this date, the 1978 ban marked a pivotal moment in the regulatory landscape concerning asbestos in construction. This decision was driven by growing health concerns regarding asbestos exposure and its association with serious diseases, including asbestosis and mesothelioma.

Subsequent developments in asbestos regulations have occurred, including further restrictions and bans on remaining uses, but the 1978 ban was foundational in limiting most construction applications at that time.