Urea-Formaldehyde Foam Insulation (UFFI): the 1970–1982 problem, explained
1970–1982OccasionalEnvironmental
Quick answer
Homes built between 1970 and 1982 commonly used Urea-Formaldehyde Foam Insulation (UFFI). Identification, cost context and insurer questions below are drawn from EPA documentation — the source link and verification date are at the end of this page. Below: 3 identification steps for your inspector to run, the questions insurers ask, commonly cited repair costs, and links to the source documentation behind the year range.
Why it matters
UFFI off-gassed formaldehyde when new; decades on, emissions from intact 1970s installs have fallen to near background levels, but shrunken foam leaves voids that hurt insulation performance, and disturbing old foam can still release dust. It also appears on some regional disclosure forms.
Era boundaries: Injected into wall cavities mainly 1975–1980; CPSC banned it in 1982 (the ban was later vacated, but the product never returned to market).
How to identify it
This is an inspector or licensed-trade task — the steps below are about recognizing clues safely, not opening equipment or sampling materials yourself.
- Look at basement rim joists and around outlet penetrations for dried, butter-cream colored foam that crumbles at a touch
- Check exterior walls for patched injection holes drilled in rows through mortar or siding
- Do not sample wall cavities yourself — crumbling foam releases dust; cavity checks are an inspector task
Ask your inspector
- “Is the wall foam UFFI, and has it shrunk enough to matter for energy performance?”
- “Is formaldehyde testing worth doing here given the install age?”
What fixes commonly cost
Removal is rarely justified today; when done during remodels it is commonly cited at $2–$8 per square foot of opened wall. Indoor air tests are commonly cited at $100–$300.
Ranges are commonly cited figures, not quotes — access, region and scope move real prices in both directions.
What insurers ask
Not a standard U.S. insurance question; it occasionally appears on regional disclosure paperwork, so ask your agent locally.
Frequently asked questions
How do I know if my house has urea-formaldehyde foam insulation (uffi)?
Start with the era: Homes built between 1970 and 1982 commonly used Urea-Formaldehyde Foam Insulation (UFFI). The fastest visual check: Look at basement rim joists and around outlet penetrations for dried, butter-cream colored foam that crumbles at a touch. Beyond that first look, verification belongs to a licensed inspector or trade professional — this is not a DIY check.
When was urea-formaldehyde foam insulation (uffi) used in homes?
Homes built between 1970 and 1982 commonly used Urea-Formaldehyde Foam Insulation (UFFI). Injected into wall cavities mainly 1975–1980; CPSC banned it in 1982 (the ban was later vacated, but the product never returned to market). Boundary years deserve extra care: material stock and local practice never switched overnight, so a build within a couple of years of the range can go either way.
Do insurance companies care about urea-formaldehyde foam insulation (uffi)?
Not a standard U.S. insurance question; it occasionally appears on regional disclosure paperwork, so ask your agent locally. Bring documentation: permits, remediation invoices and inspection reports answer the question faster than assurances.
How much does it cost to fix urea-formaldehyde foam insulation (uffi)?
Removal is rarely justified today; when done during remodels it is commonly cited at $2–$8 per square foot of opened wall. Indoor air tests are commonly cited at $100–$300. Get local quotes before closing when this item shows up — regional labor rates move these figures substantially.