Johns Manville to Eliminate Use of Formaldehyde

Phenol formaldehyde (PF) binder has long been used for binding glass fibers in fiberglass insulation. During standard fiberglass insulation manufacture, a fairly small quantity of this PF binder is sprayed onto the glass fibers, and most of the formaldehyde is baked off during high-temperature curing. Some residual formaldehyde remains in the insulation.

In place of the phenol formaldehyde binder, Johns Manville is switching to an acrylic binder that the company has offered on selected fiberglass insulation products for several years (see