Health considerations

Cellulose fiber is characterized as a nuisance dust but is not a health hazard. The fire retardants used in cellulose insulation are also regarded as nonhazardous. For example, the toxicity of boric acid is one-sixth that of table salt. Nevertheless, respiratory pro­tection should be worn while handling and installing the insulation material. Cellulose will not cause skin irritation. Special clothing is not required during installation.