No, modern gypsum board does not contain asbestos.
Gypsum insulation made prior to the 1970s included asbestos as a means of providing increased physical strength and insulation capacity to the product. Gypsum insulation made after the 1980s generally did not contain asbestos.
Gypsum, lime, alabastine, and Gyproc (a brand of gypsum board) generally do not contain asbestos, as they are primarily made from gypsum and other non-asbestos minerals. However, older construction materials or specific products might have included asbestos, particularly before regulations were established. It's essential to check the product specifications and consult with manufacturers or safety data sheets to confirm the absence of asbestos in specific materials. If in doubt, especially in older buildings, it's advisable to have materials tested by professionals.
Older cement board may contain asbestos, and then it is properly called "asbestos cement board." Cement board more recently manufactured should not contain asbestos. The only way to know whether a particular cement board does or does not contain asbestos is to ask the manufacturer (if you know who made it) or have a sample collected from it by a qualified sampling technician and have the sample analyzed by a qualified laboratory.
No, gypsum has a natural fire resistance due to the combined molecules of water which it contains. National Gypsum has never used asbestos in its wallboard products. However, it did at one time use asbestos in some of its sprayed-on fire proofing products. That ingredient was removed from their formulation several decades ago.
Gyprock is an Australian manufacturer of gypsum-based products. They do not intentionally include asbestos in any of their products.
No, asbestos was not used in drywall. Drywall is typically made of gypsum and paper, not asbestos.
Some fibrous cement board contains asbestos and some does not. It depends on when and where it was manufactured. The only way to be certain is to have it tested by a qualified laboratory.
US Gypsum last used asbestos in their products in the mid-1970s. Following increased awareness of the health hazards associated with asbestos, the company ceased its use in manufacturing due to regulations and lawsuits related to asbestos exposure.
Many, but not all, gypsum products made in the 1970s and before contained asbestos. The only way to know for certain whether a specific installation contains asbestos is to know the brand name and product marketing name and ask the manufacturer, or to have a sample collected and tested by trained personnel and a qualified laboratory.
No.
Insulation used to contain asbestos, but modern insulation materials do not contain asbestos.
No, perlite does not contain asbestos.