L.T. Cork Covering: Construction and Recognition
A distinctive wrap-around cork insulation with a time-limited asbestos-paper construction.
What it looked like
A federal product description identifies wedge-shaped cork segments fastened to a laminate containing aluminum foil and asbestos paper. The geometry of the cork segments may be more memorable than a brand label.
Cold service and refrigeration
Cork insulation was associated with low-temperature systems, including refrigerated environments. Remembering a dairy, ice house, refrigeration plant or cold line may help establish the setting.
The important dates
The California appellate opinion identifies asbestos-containing L.T. Cork Covering manufactured from 1956 to 1959. Do not treat every Armstrong cork product or every date as the same construction.
Original historical records
Read the underlying product responses, patents, government records and court decisions with dates and source types clearly identified.
Start with what you remember
Remember a product, a room, a crew, an old carton or a period of work? Those details can guide a historical investigation.