Rock cork

Description

Molded sheets of mineral wool with a waterproof binder, such as asphalt. Rock cork is moisture resistant and was often used to insulate cold storage rooms. One commercial brand name for rock cork was Mineral-Wool Board.

Synonyms and Related Terms

rock leather; Mineral-Wool board [Armstrong Cork Co.]

Hazards and Safety

May contain asbestos.

Authority

• G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 514

• Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996

• Edward Reich, Carlton J. Siegler, Consumer Goods: How to Know and Use Them, American Book Company, New York City, 1937