How do I know what materials have asbestos in them?​

 

The only way to know for sure if a building material or product contains asbestos is to have an approved laboratory analyze a representative sample. The following list of materials provided by the United States Environmental Protection Agency (EPA) lists some (but not all) products/materials that may contain asbestos. It is intended as a general guide:
 

Cement PipesElevator Brake Shoes
Cement WallboardHVAC Duct Insulation
Cement SidingBoiler Insulation
Asphalt Floor TileBreaching Insulation
Vinyl Floor TileDuctwork Flexible Fabric Connections
Vinyl Sheet Flooring Cooling Towers
Flooring BackingPipe Insulation (corrugated air-cell, block, etc.)
Construction Mastics (floor tile, carpet, ceiling tile, etc.)Heating and Electrical Ducts
Acoustical PlasterElectrical Panel Partitions
Decorative PlasterElectrical Cloth
Textured Paints/CoatingsElectric Wiring Insulation
Ceiling Tiles and Lay-in PanelsChalkboards
Spray-Applied InsulationRoofing Shingles
Blown-in InsulationRoofing Felt
Fireproofing MaterialsBase Flashing
Taping Compounds (thermal)Thermal Paper Products
Packing Materials (for wall/floor penetrations)Fire Doors
High Temperature GasketsCaulking/Putties
Laboratory Hoods/Table TopsAdhesives
Laboratory GlovesWallboard
Fire BlanketsJoint Compounds
Fire CurtainsVinyl Wall Coverings
​Elevator Equipment Panels​Spackling Compounds