Whether there is asbestos in your home's drywall or not, most sheetrock mud (also known as wall-joint compound) which was sold between 1940 and 1980 did contain asbestos fiber. This product came in two forms and was used to fuse the seams between drywall panels once they were installed.
Mostly, HEPA air purifiers can screen different airborne particles, like asbestos measuring around 0.3 microns. ... Especially for buildings, HEPA air purifiers... more