1.1 This practice covers encapsulants intended to reduce or eliminate the release of asbestos fibers from a matrix of friable spray- or trowel-applied asbestos-containing materials.

1.2 This practice includes: (1) a series of laboratory tests to show whether an encapsulant is capable of acceptable performance on a specified asbestos-free model matrix, and (2) a series of determinations to be conducted in the field at each location for which encapsulation has been accepted, to show whether a given encapsulant is acceptable on the specific asbestos-containing matrix.

1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.

1.4 This practice does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this practice to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.