definition
strict definition
urea-formaldehyde rigid panels
Rigid sheets of thermal insulation made from urea-formaldehyde resin, a material distinct from polyurethane.
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.
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