Which of the following is an asbestos-containing material mentioned as ACM?

• A. Felt under roofs or siding
• B. Copper piping
• C. Ceramic tile
• D. Glass fiber insulation

Answer: (A)

Asbestos-containing materials are building products that still have asbestos fibers as part of the material. Roofing felt used under roofs or siding was commonly manufactured with asbestos for its durability and fire resistance, so felt under roofs or siding is a classic example of ACM. Copper piping is metal, so it does not contain asbestos. Ceramic tile is a ceramic product and isn’t typically made with asbestos, and glass fiber insulation is fiberglass, not asbestos. If asbestos is suspected, avoid disturbing the material and seek professional testing and proper abatement procedures.