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Urea formaldehyde foam insulation (UFFI) was a very effective material
during the late 1970's for improving the wall insulation of existing
homes. It could migrate inside walls to fill voids far better than any
other material when insulation was already present in those walls.
Sometimes, particularly if formulated improperly, the UFFI would give
off formaldehyde gas which is an irritant and even potential carcinogen
in the extreme. UFFI was therefore promptly banned.
UFFI is practically a non-issue healthwise. UFFI, however, is more apt
to off-gas during prolonged hot and humid weather. Nevertheless, when it
does, the formaldehyde off-gassing is still less than from the
cabinetry, carpets and subflooring in newer homes. UFFI gas can be
tested by a laboratory--however, rarely is it done at a prepurchase of a
home.
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*The first person to see a traffic
light turn green is in the
second car back.
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