Hierarchy classification:

1. top of the aat hierarchies
2. Brand Names Facet
3. Brand Names (hierarchy name)
4. brand name materials

Anotations

Scope note:

Trademarked variety of fiberboards made from bagasse (sugar cane waste) or mineral fibers. Examples include insulating tiles and boards. Celotex products were treated to resist fungi, termites, and water. The boards had a rough, weblike surface that accepted paint well, but they became brittle and friable with age. Low-density Celotex boards were used in the 1930s for heat and sound insulation in such buildings as the White House, Washington D.C. and Rockefeller Center in New York City.