urea-formaldehyde rigid panels

Urea-formaldehyde rigid panels are firm sheets of thermal insulation made of urea formaldehyde, a synthetic resin with a yellowish or butterscotch color. The material can emit formaldehyde into the air, creating potential health concerns.

The insulating resin is urea-formaldehyde. Polyurethane is a different polymer and belongs to its own rigid-panel category.

This form is a firm panel rather than foam injected into a cavity. Formaldehyde emissions depend on the product and its condition, including its age and exposure to heat and humidity.