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ASTM C728-05

(Specification)

Standard Specification for Perlite Thermal Insulation Board

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 The use of thermal insulation materials covered by this specification may be regulated by building codes or other agencies that address fire performance, or both. The fire performance of the material should be addressed through standard fire test methods established by the appropriate governing documents.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.4 The following safety hazards caveat pertains only to the test methods, Section 11, in this specification: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.

General Information

Status
Historical
Publication Date
30-Apr-2005
ICS
91.100.60 - Thermal and sound insulating materials
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.22 - Organic and Nonhomogeneous Inorganic Thermal Insulations
Current Stage
Ref Project

Relations

Replaces
ASTM C728-97e1 - Standard Specification for Perlite Thermal Insulation Board
Effective Date
01-May-2005
Replaced By
ASTM C728-05(2010) - Standard Specification for Perlite Thermal Insulation Board
Effective Date
01-Mar-2010
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-May-2005
Referred By
ASTM C1289-23 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board
Effective Date
01-May-2005

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ASTM C728-05 - Standard Specification for Perlite Thermal Insulation BoardASTM C728-05 - Standard Specification for Perlite Thermal Insulation Board
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ASTM C728-05 - Standard Specification for Perlite Thermal Insulation Board
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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 – 05
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 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 for perlite thermal insulation board used principally
C203 Test Methods for Breaking Load and Flexural Prop-
abovestructuralroofdecksandasabaseforbuilt-up,modified,
erties of Block-Type Thermal Insulation
and elastomeric membrane roofing in building construction.
C209 Test Methods for Cellulosic Fiber Insulating Board
1.2 The use of thermal insulation materials covered by this
C390 Practice for Sampling and Acceptance of Thermal
specification may be regulated by building codes or other
Insulation Lots
agencies that address fire performance, or both. The fire
C518 Test Method for Steady-State Thermal Transmission
performance of the material should be addressed through
Properties by Means of the Heat Flow Meter Apparatus
standard fire test methods established by the appropriate
C1289 Specification for Faced Rigid Cellular Polyisocya-
governing documents.
nurate Thermal Insulation Board
1.3 The values stated in inch-pound units are to be regarded
E84 Test Method for Surface Burning Characteristics of
as the standard. The values given in parentheses are for
Building Materials
information only.
1.4 The following safety hazards caveat pertains only to the
3. Terminology
test methods, Section 11, in this specification: This standard
3.1 For complete descriptions of terms used in this specifi-
does not purport to address all of the safety concerns, if any,
cation, refer to Terminology C168.
associated with its use. It is the responsibility of the user of this
standard to establish appropriate safety and health practices
4. Classification
and determine the applicability of regulatory limitations prior
4.1 Perlite thermal insulation board is classified as follows:
to use.
1
4.1.1 Type 1, Roof Insulation Board—The ⁄2 in. (13 mm)
thick version of this product is available only to manufacturers
2. Referenced Documents
of laminated rigid foam products as specified in Specification
2.1 The following standards, of the issue in effect on the
C1289.
date of material purchase, form a part of this specification to
4.1.2 Type 2, Roof Cover/Recover Board—This is used
the extent specified herein:
2 primarily as a field-applied cover board over other roof
2.2 ASTM Standards:
insulations or in reroofing applications.
C165 Test Method for Measuring Compressive Properties
of Thermal Insulations
5. Ordering Information
C168 Terminology Relating to Thermal Insulation
5.1 Orders shall at least include the following information:
5.1.1 Title and designation Specification C728.
1
This specification is under the jurisdiction of ASTM Committee C16 on
5.1.2 Product name, nominal thickness and dimensions.
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
5.1.3 Quantity of material ordered.
Organic and Nonhomogeneous Inorganic Thermal Insulations.
5.1.4 Manufacturer’s name, address, and telephone number.
Current edition approved May 1, 2005. Published May 2005. Originally
´1
approved in 1972. Last previous edition approved in 1997 as C728 – 97 . DOI:
6. Materials and Manufacture
10.1520/C0728-05.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
6.1 Composition—The basic material of the insulation
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
board shall be perlite expanded by the application of heat to
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. form glassy, cellular aggregates. The insulation board shall be
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C728 – 05
composed of expanded perlite and fibers formed into rigid, flat, 9. Workmanship, Finish, and Appearance
rectangular units with a suitable sizing material incorporated in
9.1 The surface of the board shall be clean, dry, and free of
the product. It may have on one or both surfaces a facing or
visual defects that will adversely affect the service quality.
coating to prevent excessive hot bitumen strike-in during
Edges shall be square.
roofing installation.
10
...

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1.1 This specification covers structural insulating board for general thermal insulating, fire-resistive, and marine bulkhead applications. The rigid, preformed structural insulating board is for use at temperatures up to 1700°F (927°C). For specific applications, the actual temperature limit shall be agreed upon between the manufacturer and the purchaser.  
1.2 The structural insulating board maintains its structural integrity after immersion in water.  
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Standard Test Method for Determination of Installed Thickness of Pneumatically Applied Loose-Fill Building Insulation

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5.1 This test method was designed to give the manufacturer of loose-fill insulation products a way of determining what the initial installed thickness should be in a horizontal open attic for pneumatic applications.  
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5.3 For the purpose of product design, testing should be done at a variety of R-values. At least three R-values should be used: the lowest R-value on the product label, the highest R-value on the product label, and an R-value near the midpoint of the R-value range.
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