ASTM C461-81(1997)e1 - 10.5.1997
 
1. Scope

1.1 These test methods cover procedures for sampling and testing mastics and coatings for use as weather and vapor barrier finishes on thermal insulations and for other accessory use.

1.2 The values stated in inch-pound units are to be regarded as the standard. The metric equivalents of inch-pound units may be approximate.

1.3 The test methods appear in the following order:

Section Sampling 3 Uniformity and Storage Stability 4 Stability Under Freezing 5 Density and Weight per Gallon 6 Consistency 7 Solids Content 8 Content of Volatiles and Coverage of Mastics and Coatings 9 Build 10 Drying Time 11 Flash Point 12

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

 
2. Referenced Documents

D140-01

Standard Practice for Sampling Bituminous Materials

D217-21a

Standard Test Methods for Cone Penetration of Lubricating Grease (Includes all amendments and changes 12/20/2021).

D2196-20(2026)

Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational Viscometer

D3278-21

Standard Test Methods for Flash Point of Liquids by Small Scale Closed-Cup Apparatus

D93-26

Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester

C419-20(2025)

Standard Practice for Making and Curing Test Specimens of Mastic Thermal Insulation Coatings

D56-22

Standard Test Method for Flash Point by Tag Closed Cup Tester

D71-24

Standard Test Method for Relative Density of Solid Pitch and Asphalt (Displacement Method)

C168-25

Standard Terminology Relating to Thermal Insulation