Specifically, formaldehyde-based glues. "Most manufactured wood building materials contain one of these two types of formaldehyde-based glues: * Phenol-for

Specifically, formaldehyde-based glues. "Most manufactured wood building materials contain one of these two types of formaldehyde-based glues: * Phenol-formaldehyde (PF) * Urea-formaldehyde (UF). Its water resistant properties make phenol-formaldehyde glue more effective for production of exterior wood materials. Urea-formaldehyde glue, cheaper and less tolerant of excessive moisture, is most often used for interior materials including wall paneling, flooring and cabinetry. " More details here: http://www.healthyhouseinstitute.com/hhip-780-Formaldehyde-Based-Glues http://www.healthyhouseinstitute.com/hhip-780-Formaldehyde-B...