Urea-formaldehyde foam insulation
The examples of foam here were on a tapelift from a
building that had been remodeled.
Transmitted Off Crossed Circular Polarized Light Illumination
Definition/Function:
Urea-formaldehyde foam insulation is common in prefab walls or as insulation injected
into walls after construction to improve insulation.
Significance in the Environment:
Urea-formaldehyde foam is a source of formaldehyde vapor in homes along with
urea-formaldehyde glues used in some construction materials. The
foam particles themselves are an abrasive irritant to the skin and mucus membranes.
Characteristic Features:
Associated Particles:
References:
