ASTM C1841-22

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C1841 − 22
Standard Specification for
Interior Radiation Control Coating (IRCC) for Building
1
Applications
This standard is issued under the fixed designation C1841; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D16 Terminology for Paint, Related Coatings, Materials, and
Applications
1.1 This specification covers the classification, composition,
D1653 Test Methods for Water Vapor Transmission of Or-
and physical properties of an Interior Radiation Control Coat-
ganic Coating Films
ing (IRCC) for use in building applications to reduce radiant
D3273 Test Method for Resistance to Growth of Mold on the
heat transfer. The IRCC is sprayed, roller applied, or brushed
Surface of Interior Coatings in an Environmental Cham-
onto interior building surfaces.
ber
1.2 The values stated in inch-pound units are to be regarded
D3274 Test Method for Evaluating Degree of Surface Dis-
as standard. The values given in parentheses are mathematical
figurement of Paint Films by Fungal or Algal Growth, or
conversions to SI units that are provided for information only
Soil and Dirt Accumulation
and are not considered standard.
D3925 Practice for Sampling Liquid Paints and Related
1.3 This standard does not purport to address all of the
Pigmented Coatings
safety concerns, if any, associated with its use. It is the D4708 Practice for Preparation of Uniform Free Films of
responsibility of the user of this standard to establish appro-
Organic Coatings
priate safety, health, and environmental practices and deter- E84 Test Method for Surface Burning Characteristics of
mine the applicability of regulatory limitations prior to use.
Building Materials
1.4 This international standard was developed in accor- E96 Test Methods for Gravimetric Determination of Water
dance with internationally recognized principles on standard-
Vapor Transmission Rate of Materials
3
ization established in the Decision on Principles for the
2.2 CSA Standard:
Development of International Standards, Guides and Recom-
CSA O121 Douglas Fir Plywood
mendations issued by the World Trade Organization Technical
4
2.3 NIST Standard:
Barriers to Trade (TBT) Committee.
Voluntary Product Standard PS 1-07 Structural Plywood
2. Referenced Documents
3. Terminology
2
2.1 ASTM Standards:
3.1 Refer to the Terminology C168 for definitions of general
C168 Terminology Relating to Thermal Insulation
terms related to thermal insulation used in this specification.
C1186 Specification for Flat Fiber-Cement Sheets
3.2 Refer to the Terminology D16 for definitions of general
C1321 Practice for Installation and Use of Interior Radiation
terms for paint, related coatings, materials, and applications
Control Coating Systems (IRCCS) in Building Construc-
used in this specification.
tion
C1371 Test Method for Determination of Emittance of
3.3 Definitions of Terms Specific to This Standard:
Materials Near Room Temperature Using Portable Emis-
3.3.1 interior radiation control coating (IRCC), n—a low-
someters
emittance liquid applied material, adjacent to an air space
C1396 Specification for Gypsum Board
within a structure.
3.3.2 premixed coating, n—a liquid product that requires all
1
ingredients be combined and blended during manufacture and
This specification is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.21 on
require only stirring before application.
Reflective Insulation.
Current edition approved Nov. 1, 2022. Published December 2022. DOI:
10.1520/C1841-22.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Canadian Standards Association (CSA), 178 Rexdale Blvd.,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Toronto, ON M9W 1R3, Canada, http://www.csagroup.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from National Institute of Standards and Technology (NIST), 100
the ASTM website. Bureau Dr., Stop 1070, Gaithersburg, MD 20899-1070, http://www.nist.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1841 − 22
TABLE 2 Surface Burning Characteristic Class Ratings
3.3.3 field mixed coating, n—a liquid product that requires
two or more components be combined in the field before Class Value
A Flame spread index 25 or less
application.
Smoke developed index 450 or less
3.3.4 film (as related to IRCC coatings), n—a dried coat of B Flame spread inde
...