ASBESTOS HOME WALLS AND CEILINGS
Interior surfaces: walls and ceilings
Sprayed-on or toweled-on surface material on wall and ceiling surfaces of some homes may be composed of asbestos-containing materials. If the surface material is firmly attached, has a hard surface, and has no water damage, it should not be hazardous.
If the surface can produce powder or dust by hand pressure, it is advisable to seek professional advice before deciding what further course of action to take. You may choose to send a sample to a lab for analysis; and for this option you should follow sampling guidance described earlier in this booklet.
You should not try to do either repair or removal of this material yourself. There's too much danger you will expose yourself and your family to heavy concentrations of asbestos fibers. Contact a contractor whose workers are specifically trained to remove this type of material without contaminating people or the environment.
Courtesy of The EPA
Asbestos may exist in your home's electrical equipment