ASTM C665-23

Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing

ABSTRACT
This specification covers the composition and physical properties of mineral-fiber blanket insulation used to thermally or acoustically insulate ceilings, floors, and walls in light frame construction and manufactured housing. The requirements cover fibrous blankets and facings. Typical mineral-fiber thermal insulation is classified into the following types, classes, and categories: Type I; Type II (Class A, Class B, and Class C (Category 1 and Category 2)); and Type III (Class A, Class B, and Class C (Category 1 and Category 2)). The following test methods shall be performed: dimensions; thermal resistance; surface burning characteristics; critical radiant flux; water vapor permeance; water vapor sorption; odor emission; corrosiveness; and fungi resistance.
SIGNIFICANCE AND USE
11.1 This specification applies to products that are used in buildings. While products that comply with this specification are used in various constructions, they are adaptable primarily, but not exclusively, to wood frame construction.  
11.2 Since the property of thermal resistance for a specific thickness of blanket is only part of the total thermal performance of a building element such as a wall, ceiling, floor, and so forth, this specification states only general classifications for thermal resistance of the fibrous blanket itself. Facings that provide additional resistance to water-vapor transfer can affect system performance.
SCOPE
1.1 This specification covers the composition and physical properties of mineral-fiber blanket insulation used to thermally or acoustically insulate ceilings, floors, and walls in light frame construction and manufactured housing. The requirements cover fibrous blankets and facings. Values for water-vapor permeance of facings are suggested for information that will be helpful to designers and installers.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Apr-2023
• ICS: 27.220 - Heat recovery. Thermal insulation
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.23 - Blanket and Loose Fill Insulation

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C665 − 23
Standard Specification for
Mineral-Fiber Blanket Thermal Insulation for Light Frame
1
Construction and Manufactured Housing
This standard is issued under the fixed designation C665; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope C177 Test Method for Steady-State Heat Flux Measure-
ments and Thermal Transmission Properties by Means of
1.1 This specification covers the composition and physical
the Guarded-Hot-Plate Apparatus
properties of mineral-fiber blanket insulation used to thermally
C390 Practice for Sampling and Acceptance of Thermal
or acoustically insulate ceilings, floors, and walls in light frame
Insulation Lots
construction and manufactured housing. The requirements
C518 Test Method for Steady-State Thermal Transmission
cover fibrous blankets and facings. Values for water-vapor
Properties by Means of the Heat Flow Meter Apparatus
permeance of facings are suggested for information that will be
C653 Guide for Determination of the Thermal Resistance of
helpful to designers and installers.
Low-Density Blanket-Type Mineral Fiber Insulation
1.2 The values stated in inch-pound units are to be regarded
C1104/C1104M Test Method for Determining the Water
as standard. The values given in parentheses are mathematical
Vapor Sorption of Unfaced Mineral Fiber Insulation
conversions to SI units that are provided for information only
C1304 Test Method for Assessing the Odor Emission of
and are not considered standard.
Thermal Insulation Materials
1.3 This standard does not purport to address all of the C1338 Test Method for Determining Fungi Resistance of
safety concerns, if any, associated with its use. It is the
Insulation Materials and Facings
responsibility of the user of this standard to establish appro- C1617 Practice for Quantitative Accelerated Laboratory
priate safety, health, and environmental practices and deter-
Evaluation of Extraction Solutions Containing Ions
mine the applicability of regulatory limitations prior to use. Leached from Thermal Insulation on Aqueous Corrosion
1.4 This international standard was developed in accor-
of Metals
dance with internationally recognized principles on standard- E84 Test Method for Surface Burning Characteristics of
ization established in the Decision on Principles for the Building Materials
Development of International Standards, Guides and Recom-
E96/E96M Test Methods for Gravimetric Determination of
mendations issued by the World Trade Organization Technical Water Vapor Transmission Rate of Materials
Barriers to Trade (TBT) Committee.
E970 Test Method for Critical Radiant Flux of Exposed Attic
Floor Insulation Using a Radiant Heat Energy Source
2. Referenced Documents
G1 Practice for Preparing, Cleaning, and Evaluating Corro-
2
sion Test Specimens
2.1 ASTM Standards:
B152/B152M Specification for Copper Sheet, Strip, Plate,
3. Terminology
and Rolled Bar
C167 Test Methods for Thickness and Density of Blanket or
3.1 Definitions—For definitions of terms used in this
Batt Thermal Insulations
specification, see Terminology C168.
C168 Terminology Relating to Thermal Insulation
4. Classification
1
This specification is under the jurisdiction of ASTM Committee C16 on
4.1 Typical mineral-fiber thermal insulation is classified into
Thermal Insulation and is the direct responsibility of Subcommittee C16.23 on
the following types, classes, and categories:
Blanket and Loose Fill Insulation.
4.1.1 Type I—Blankets without facings.
Current edition approved May 1, 2023. Published June 2023. Originally
4.1.2 Type II—Blankets with nonreflective facings.
approved in 1970. Last previous edition approved in 2017 as C665 – 17. DOI:
10.1520/C0665-23.
4.1.2.1 Class A—Facing with a flame spread index of 25 or
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
less.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
(1) Category 1—Facing is a vapor retarder.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. (2) Category 2—Facing is not a vapor retarder.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C665 − 23
4.1.2.2 Class B—Facing with a flame propagation resis- 7. Physical Properties
2 2
tance; critica
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C665 − 17 C665 − 23
Standard Specification for
Mineral-Fiber Blanket Thermal Insulation for Light Frame
1
Construction and Manufactured Housing
This standard is issued under the fixed designation C665; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This specification covers the composition and physical properties of mineral-fiber blanket insulation used to thermally or
acoustically insulate ceilings, floors, and walls in light frame construction and manufactured housing. The requirements cover
fibrous blankets and facings. Values for water-vapor permeance of facings are suggested for information that will be helpful to
designers and installers.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 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 healthsafety, health, and environmental practices and determine
the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled Bar
C167 Test Methods for Thickness and Density of Blanket or Batt Thermal Insulations
C168 Terminology Relating to Thermal Insulation
C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the
Guarded-Hot-Plate Apparatus
C390 Practice for Sampling and Acceptance of Thermal Insulation Lots
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
C653 Guide for Determination of the Thermal Resistance of Low-Density Blanket-Type Mineral Fiber Insulation
C1104/C1104M Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber Insulation
C1304 Test Method for Assessing the Odor Emission of Thermal Insulation Materials
C1338 Test Method for Determining Fungi Resistance of Insulation Materials and Facings
1
This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.23 on Blanket and Loose
Fill Insulation.
Current edition approved Sept. 1, 2017May 1, 2023. Published September 2017June 2023. Originally approved in 1970. Last previous edition approved in 20122017 as
C665 – 12.C665 – 17. DOI: 10.1520/C0665-17.10.1520/C0665-23.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C665 − 23
C1617 Practice for Quantitative Accelerated Laboratory Evaluation of Extraction Solutions Containing Ions Leached from
Thermal Insulation on Aqueous Corrosion of Metals
E84 Test Method for Surface Burning Characteristics of Building Materials
E96/E96M Test Methods for Gravimetric Determination of Water Vapor Transmission Rate of Materials
E970 Test Method for Critical Radiant Flux of Exposed Attic Floor Insulation Using a Radiant Heat Energy Source
G1 Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens
3. Terminology
3.1 Definitions—For definitions of terms used in this specification, see Terminology C168.
4. Classification
4.1 Typical mineral-fiber thermal insulation is classified into the following types, classes, and categories:
4.1.1 Type I—Blankets without facings.
4.1.2 Type II—Blankets with nonreflective facings.
4.1.2.1 Class A—Facing with a flame spread index of 25 o
...