The requirement for asbestos testing before residential renovation or demolition work depends on municipal regulations, which can vary from one city to another. Therefore, it is important to check the requirements with your municipality before starting your project.
However, if you suspect the presence of asbestos in certain materials, it is prudent to assume they contain asbestos until testing confirms otherwise. This precaution ensures your safety, as well as the safety of your family and workers, by minimizing the risks associated with asbestos fiber exposure when handling or disturbing the affected materials.