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ASTM C726-05

(Specification)

Standard Specification for Mineral Fiber Roof Insulation Board

Standard Specification for Mineral Fiber Roof Insulation Board

SCOPE
1.1 This specification covers the composition and physical properties of mineral fiber insulation board used above structural roof decks as a base for built-up roofing and single ply membrane systems 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 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 the regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Mar-2005
ICS
91.100.60 - Thermal and sound insulating materials
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.20 - Homogeneous Inorganic Thermal Insulations
Current Stage
Ref Project

Relations

Replaces
ASTM C726-00a - Standard Specification for Mineral Fiber Roof Insulation Board
Effective Date
01-Apr-2005
Replaced By
ASTM C726-05e1 - Standard Specification for Mineral Fiber Roof Insulation Board
Effective Date
01-Apr-2005
Referred By
ASTM C956-04(2019) - Standard Specification for Installation of Cast-In-Place Reinforced Gypsum Concrete
Effective Date
01-Apr-2005
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-Apr-2005

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ASTM C726-05 - Standard Specification for Mineral Fiber Roof Insulation BoardASTM C726-05 - Standard Specification for Mineral Fiber Roof Insulation Board
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ASTM C726-05 - Standard Specification for Mineral Fiber Roof Insulation Board
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C 726 – 05
Standard Specification for
1
Mineral Fiber Roof Insulation Board
This standard is issued under the fixed designation C726; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) 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 the Guarded Hot Plate Apparatus
C203 Test Methods for Breaking Load and Flexural Prop-
1.1 This specification covers the composition and physical
erties of Block-Type Thermal Insulation
properties of mineral fiber insulation board used above struc-
C209 Test Methods for Cellulosic Fiber Insulating Board
tural roof decks as a base for built-up roofing and single ply
C390 Practice for Sampling and Acceptance of Preformed
membrane systems in building construction.
2
Thermal Insulation Lots
1.2 The use of thermal insulation materials covered by this
C518 Test Method for Steady-State Heat Flux Measure-
specification may be regulated by building codes or other
ments and Thermal Transmission Properties by Means of
agencies that address fire performance, or both. The fire
the Heat Flow Meter Apparatus
performance of the material should be addressed through
C1363 TestMethodfortheThermalPerformanceofBuild-
standard fire test methods established by the appropriate
ing Assemblies by Means of a Hot Box Apparatus
governing documents.
D312 Specification for Asphalt Used in Roofing
1.3 The values stated in inch-pound units are to be regarded
D450 Specification for Coal-Tar Pitch Used in Roofing,
as the standard. the values given in parentheses are for
Dampproofing, and Waterproofing
information only.
D2126 TestMethodforResponseofRigidCellularPlastics
1.4 This standard does not purport to address all of the
to Thermal and Humid Aging
safety concerns, if any, associated with its use. It is the
E84 Test Method for Surface Burning Characteristics of
responsibility of the user of this standard to establish appro-
Building Materials
priate safety and health practices and determine the applica-
2.3 Other Referenced Documents:
bility of the regulatory limitations prior to use.
CAN/ULC-S102–M88 StandardMethodofTestforSurface
2. Referenced Documents BurningCharacteristicsofBuildingMaterialsandAssem-
3
blies
2.1 The following standards, of the issue in effect on the
date of material purchase, form a part of this specification to
3. Terminology
the extent specified herein:
2
3.1 Definitions—Termsusedinthisspecificationaredefined
2.2 ASTM Standards:
in Terminology C168.
C165 Test Method for Measuring Compressive Properties
of Thermal Insulations
4. Ordering Information
C168 Terminology Relating to Thermal Insulating Materi-
4.1 Orders for material purchased under this specification
als
shall include:
C177 Test Method for Steady-State Heat Flux Measure-
4.1.1 Designation of this specification,
ments and Thermal Transmission Properties by Means of
4.1.2 Product name,
4.1.3 Board dimensions,
1
This specification is under the jurisdiction of ASTM Committee C16 on 4.1.4 Quantity of material, and
Thermal Insulation and is the direct responsibility of Subcommittee C16.20 on
4.1.5 Special packaging or marking, (13.1 and 13.2)if
Homogeneous Inorganic Thermal Insulations.
required.
Current edition approved April 1, 2005. Published April 2005. Originally
approved in 1972. Last previous edition appoved in 2000 as C726–00a.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from Underwriters’ Laboratories of Canada, 7 Crouse Road, Scar-
the ASTM website. borough, Ontario, Canada M1R 3A9.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C726–05
2 2
5. Materials and Manufacture 7.5 Mass per unit area of any board, lb/ft (kg/m ) shall be
within 10% of the value specified by the manufacturer.
5.1 Mineral fiber roof insulation board shall consist of
Averagemassperunitareaofatleast20boardsshallbewithin
mineral fibers with an organic resin or other suitable binder.
5% of the value specified by the manufacturer.
5.2 For built-up roofing or polymer modified bitumen sys-
tems the board shall be faced during manufacture on one
8. Workmanship, Finish, and Appearance
surface with a cover adequate for the application of Specifica-
tion D312 asphalt or Specification D450 coal-tar pitch 8.1 Insulation boards shall not have visible defects that will
adversely affect service qualities.
built-up roo
...

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4.1 Classification of insulation relative to flexibility or rigidity is useful in establishing installation and application characteristics.
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4.1 Inorganic fibrous thermal insulation can contain varying amounts of non-fibrous material. Non-fibrous material does not contribute to the insulating value of the insulation and therefore a procedure for determining that amount is desirable. Several specifications refer to shot content and percent (%) retained on various screen sizes determined by this test method.
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SIGNIFICANCE AND USE
5.1 An inherent characteristic of some alloys of austenitic stainless steel is their tendency to crack at stress points when exposed to certain corrosive environments. The mechanisms of ESCC are complex and not completely understood but are apparently related to certain metallurgical properties. Chloride and fluoride ions have the potential to induce stress corrosion cracking in the absence of inhibiting ions.3  
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1.1 This specification covers the classification and performance of flexible aerogel thermal insulation. This will cover the range of continuous exposure operating temperatures from –321°F (–196°C) up to 1200°F (649°C).  
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ABSTRACT
This specification covers structural insulating board for general thermal insulating, fire-resistive, and marine bulkhead applications. The structural insulating boards shall be of the following types and grades: Types I and II and Grades 1; 2; 3; 4; 5; 6; 7; and 8. Calcium silicate structural insulating board shall be composed of hydrated calcium silicate with natural or man-made fibers or fillers, or a combination thereof. The following test methods shall be performed: dimensions and density; flexural strength; compressive strength; screw holding strength; apparent thermal conductivity; combustion characteristics; and maximum use temperatures.
SCOPE
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.  
1.3 Rapid cycling over a wide temperature range is not recommended because of potential damage due to thermal shock.  
1.4 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.  
1.5 When the installation or use of thermal insulation materials, accessories and systems, may pose safety or health problems, the manufacturer shall provide the user appropriate current information regarding any known problems associated with the recommended use of the company's products, and shall also recommend protective measures to be employed in their safe utilization. The user shall establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.  
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ASTM C165-23(Test Method)
Standard Test Method for Measuring Compressive Properties of Thermal Insulations

SIGNIFICANCE AND USE
4.1 In providing Procedures A and B, it is recognized that different types of thermal insulation will exhibit significantly different behavior under compressive load. Data must usually be obtained from a complete load-deformation curve, and the useful working range normally corresponds to only a portion of the curve. The user is cautioned against use of the product in the range beyond which the product is permanently damaged or properties are adversely affected.  
4.2 Load-deformation curves provide useful data for research and development, quality control, specification acceptance or rejection, and for other special purposes. Standard loading rates shall not be used arbitrarily for all purposes; the effects of impact, creep, fatigue, and repeated cycling must be considered. All load-deformation data shall be reviewed carefully for applicability prior to acceptance for use in engineering designs differing widely in load, load application rate, and material dimensions involved.
SCOPE
1.1 This test method covers two procedures for determining the compressive resistance of thermal insulations.  
1.1.1 Procedure A covers thermal insulations having an approximate straight-line portion of a load-deformation curve, with or without an identifiable yield point as shown in Figs. 1 and 2. Such behavior is typical of most rigid board or block-type insulations.
FIG. 1 Procedure A—Straight Line Portion with Definite Yield Point
FIG. 2 Procedure A—Straight Line Portion but no Definite Yield Point  
1.1.2 Procedure B covers thermal insulations that become increasingly more stiff as load is increased, as shown in Fig. 3. Such behavior is typical of fibrous batt and blanket insulations that have been compressed previously to at least the same deformation by compression packaging or mechanical softening.
FIG. 3 Procedure B—Increasing Stiffness  
1.2 It is recognized that the classification of materials under Procedures A and B shall not hold in all cases. For example, some batt or blanket materials that have not been compression packaged will exhibit behavior more typical of Procedure A for their first loadings. Also, some higher density fibrous insulation boards that have been precompressed will exhibit load-deformation curves more typical of Procedure B. There will also be thermal insulations with load-deformation curves that follow none of the three types shown here; that is, curves with no straight-line portion, curves with compaction areas, and curves that change from negative to positive slope.  
1.3 This test method does not cover reflective or loose fill insulations.  
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.  
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1.6 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.

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