ASTM C728-17

Standard Specification for Perlite Thermal Insulation Board

ABSTRACT
This specification covers the composition and physical properties for perlite thermal insulation board used principally above structural roof decks and as a base for built-up, modified, and elastomeric membrane roofing in building construction. Perlite thermal insulation board is classified as follows: type 1 - roof insulation board, and type 2 - roof cover/recover board. The basic material of the insulation board shall be perlite expanded by the application of heat to form glassy, cellular aggregates. The finished board may be either single-ply or multiple-ply. Perlite thermal insulation boards shall conform to the thermal resistance prescribed. The thermal resistance, compressive strength, tensile strength, flame speed classification, and water absorption shall be tested to meet the requirements prescribed.
SCOPE
1.1 This specification covers the composition and physical properties for perlite thermal insulation board used principally above structural roof decks and as a base for built-up, modified, and elastomeric membrane roofing in building construction.  
1.2 When adopted by an authority having jurisdiction, codes that address fire properties in many applications regulate the use of the thermal insulation materials covered by this specification. Fire properties are controlled by job, project, or other specifications where codes or government regulations do not apply.  
1.3 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.  
1.4 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.  
1.5 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: Historical
• Publication Date: 28-Feb-2017
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.22 - Organic and Nonhomogeneous Inorganic Thermal Insulations

Relations

• Replaces: ASTM C728-16 - Standard Specification for Perlite Thermal Insulation Board
• Effective Date: 01-Mar-2017
• Referred By: ASTM C1289-23 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board
• Effective Date: 01-Mar-2017
• Referred By: ASTM C1558-19 - Standard Guide for Development of Standard Data Records for Computerization of Thermal Transmission Test Data for Thermal Insulation
• Effective Date: 01-Mar-2017

Standards Content (Sample)

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:C728 −17
Standard Specification for
1
Perlite Thermal Insulation Board
This standard is issued under the fixed designation C728; 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.
2
1. Scope 2.2 ASTM Standards:
C165 Test Method for Measuring Compressive Properties of
1.1 This specification covers the composition and physical
Thermal Insulations
properties for perlite thermal insulation board used principally
C168 Terminology Relating to Thermal Insulation
abovestructuralroofdecksandasabaseforbuilt-up,modified,
C177 Test Method for Steady-State Heat Flux Measure-
and elastomeric membrane roofing in building construction.
ments and Thermal Transmission Properties by Means of
1.2 Whenadoptedbyanauthorityhavingjurisdiction,codes
the Guarded-Hot-Plate Apparatus
that address fire properties in many applications regulate the
C203 Test Methods for Breaking Load and Flexural Proper-
use of the thermal insulation materials covered by this speci-
ties of Block-Type Thermal Insulation
fication. Fire properties are controlled by job, project, or other
C209 Test Methods for Cellulosic Fiber Insulating Board
specifications where codes or government regulations do not
C390 Practice for Sampling and Acceptance of Thermal
apply.
Insulation Lots
1.3 The values stated in inch-pound units are to be regarded C518 Test Method for Steady-State Thermal Transmission
Properties by Means of the Heat Flow Meter Apparatus
as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only C1289 Specification for Faced Rigid Cellular Polyisocyanu-
rate Thermal Insulation Board
and are not considered standard.
E84 Test Method for Surface Burning Characteristics of
1.4 This standard does not purport to address all of the
Building Materials
safety concerns, if any, associated with its use. It is the
C1763 Test Method for Water Absorption by Immersion of
responsibility of the user of this standard to establish appro-
Thermal Insulation Materials
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3. Terminology
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard- 3.1 For complete descriptions of terms used in this
ization established in the Decision on Principles for the specification, refer to Terminology C168.
Development of International Standards, Guides and Recom-
4. Classification
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
4.1 Perlite thermal insulation board is classified as follows:
4.1.1 Type 1, Roof Insulation Board—A perlite based roof
2. Referenced Documents
insulation cover board.
4.1.2 Type 2, Roof Cover or Recover Board—This is used
2.1 The following standards, of the issue in effect on the
primarily as a field-applied cover board over other roof
date of material purchase, form a part of this specification to
insulations or in reroofing applications. The product is also
the extent specified herein:
available to manufacturers of laminated rigid foam products as
specified in Specification C1289, Type III.
4.1.3 Type 3, Roof Cover or Recover Board—Aperlitebased
cover board that is field applied over other roof insulations or
in re-roofing and recover applications. The product is also
1
This specification is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
2
Organic and Nonhomogeneous Inorganic Thermal Insulations. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2017. Published April 2017. Originally contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
approved in 1972. Last previous edition approved in 2016 as C728 – 16. DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/C0728-17. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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C728−17
available to manufacturers of laminated rigid foam products as 7.2 The insulation and cover board shall further conform to
specified in Specification C1289, Type III. the physical requirements shown in Table 1.
8. Standard Dimensions and Tolerances
5. Ordering Information
8.1 The dimensions and tolerances shall conform to those
5.1 Orders shall at least
...

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: C728 − 16 C728 − 17
Standard Specification for
1
Perlite Thermal Insulation Board
This standard is issued under the fixed designation C728; 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 for perlite thermal insulation board used principally above
structural roof decks and as a base for built-up, modified, and elastomeric membrane roofing in building construction.
1.2 When adopted by an authority having jurisdiction, codes that address fire properties in many applications regulate the use
of the thermal insulation materials covered by this specification. Fire properties are controlled by job, project, or other
specifications where codes or government regulations do not apply.
1.3 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.
1.4 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.
1.5 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
2.1 The following standards, of the issue in effect on the date of material purchase, form a part of this specification to the extent
specified herein:
2
2.2 ASTM Standards:
C165 Test Method for Measuring Compressive Properties of 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
C203 Test Methods for Breaking Load and Flexural Properties of Block-Type Thermal Insulation
C209 Test Methods for Cellulosic Fiber Insulating Board
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
C1289 Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board
E84 Test Method for Surface Burning Characteristics of Building Materials
C1763 Test Method for Water Absorption by Immersion of Thermal Insulation Materials
3. Terminology
3.1 For complete descriptions of terms used in this specification, refer to Terminology C168.
4. Classification
4.1 Perlite thermal insulation board is classified as follows:
4.1.1 Type 1, Roof Insulation Board—A perlite based roof insulation cover board.
1
This specification is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on Organic and
Nonhomogeneous Inorganic Thermal Insulations.
Current edition approved March 1, 2016March 1, 2017. Published April 2016April 2017. Originally approved in 1972. Last previous edition approved in 20152016 as
C728 – 15.C728 – 16. DOI: 10.1520/C0728-16.10.1520/C0728-17.
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 ----------------------
C728 − 17
4.1.2 Type 2, Roof Cover or Recover Board—This is used primarily as a field-applied cover board over other roof insulations
or in reroofing applications. The product is also available to manufacturers of laminated rigid foam products as specified in
Specification C1289, Type III.
4.1.3 Type 3, Roof Cover or Recover Board—A perlite based cover board that is field applied over other roof insulations or in
re-roofing and recover applications. The product is also avail
...