ASTM C208-08

Standard Specification for Cellulosic Fiber Insulating Board

ABSTRACT
This specification covers the principal cellulosic fiber insulating board types, grades, and sizes. Insulating board covered by this specification consists of six types: Types I, II (Grades 1 and 2), III (Grades 1 and 2), IV (Grades 1 and 2), V, and VI. Cellulosic fiber insulating board shall be manufactured from refined or partially refined ligno-cellulosic (wood or cane) fibers, by felting or molding process, into homogeneous panels. The insulating board shall conform to the physical properties specified.
SCOPE
1.1 This specification covers the principal cellulosic fiber insulating board types, grades, and sizes. Requirements are specified for composition, construction, physical properties, tolerances, sampling procedures, and test methods.
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 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.

General Information

• Status: Historical
• Publication Date: 31-Jul-2008
• 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 C208-95(2001) - Standard Specification for Cellulosic Fiber Insulating Board
• Effective Date: 01-Aug-2008
• Replaced By: ASTM C208-08e1 - Standard Specification for Cellulosic Fiber Insulating Board
• Effective Date: 01-Aug-2008
• Referred By: ASTM C846-16(2021) - Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing
• Effective Date: 01-Aug-2008
• Referred By: ASTM C1289-23 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board
• Effective Date: 01-Aug-2008
• 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-Aug-2008
• Referred By: ASTM C209-20 - Standard Test Methods for Cellulosic Fiber Insulating Board
• Effective Date: 01-Aug-2008

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 208 – 08
Standard Specification for
1
Cellulosic Fiber Insulating Board
This standard is issued under the fixed designation C208; 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 (´) 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 E72 Test Methods of Conducting Strength Tests of Panels
for Building Construction
1.1 This specification covers the principal cellulosic fiber
2.2 Federal Standard:
insulating board types, grades, and sizes. Requirements are
4900.1 Rev-1 U.S. Dept. of Housing and Urban Develop-
specified for composition, construction, physical properties,
ment Minimum Property Standards, One and Two Family
tolerances, sampling procedures, and test methods.
4
Dwellings
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical
3. Terminology
conversions to SI units that are provided for information only
3.1 For definitions of terms used in this specification, see
and are not considered standard.
Terminology C168 and Definitions D1554.
1.3 When the installation or use of thermal insulation
3.2 Definitions of Terms Specific to This Standard:
materials, accessories, and systems may pose safety or health
3.2.1 cellulosic fiber insulating board—a fibrous-felted,
problems, the manufacturer shall provide the user appropriate
homogeneous panel made from ligno-cellulosic fibers (usually
current information regarding any known problems associated
3
wood or cane) and having a density of less than 31 lb/ft (497
withtherecommendeduseofthecompany’sproductsandshall
3 3 3
kg/m ) but more than 10 lb/ft (160 kg/m ).
also recommend protective measures to be employed in their
3.2.1.1 Discussion—Cellulosic fiber insulating board is
safe utilization. The user shall establish appropriate safety and
characterized by an integral bond which is produced by
health practices and determine the applicability of regulatory
interfelting of the fibers, but which has not been consolidated
requirements prior to use.
under heat and pressure as a separate stage in manufacture.
2. Referenced Documents Other materials may be added during manufacture to improve
2
certain properties.
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation
4. Classification
C209 Test Methods for Cellulosic Fiber Insulating Board
4.1 Insulatingboardcoveredbythisspecificationconsistsof
C390 Practice for Sampling and Acceptance of Thermal
six types:
Insulation Lots
4.1.1 Type I—Sound deadening board, for use in wall
C846 Practice for Application of Cellulosic Fiber Insulat-
assemblies to control sound transmissions.
ing Board for Wall Sheathing
4.1.2 Type II—Roof insulation board, for use in various
D1037 Test Methods for Evaluating Properties of Wood-
roofing systems.
Base Fiber and Particle Panel Materials
4.1.2.1 Grade 1—Primarily for use under built up roof
D1554 Terminology Relating to Wood-Base Fiber and
systems.
Particle Panel Materials
4.1.2.2 Grade 2—Primarilyforuseundersingle-plyroofing
D 2164 Methods of Testing Structural Insulating Roof
3 systems.
Deck
4.1.3 Type III—Ceiling tiles and panels.
4.1.3.1 Grade 1—Nonacoustical, for use as decorative wall
1
This specification is under the jurisdiction of ASTM Committee C16 on
and ceiling coverings.
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
4.1.3.2 Grade 2—Acoustical, for use as decorative, sound
Organic and Nonhomogeneous Inorganic Thermal Insulations.
absorbing wall and ceiling coverings.
Current edition approved Aug. 1, 2008. Published August 2008. Originally
approved in 1946. Last previous edition approved in 2001 as C208–95 (2001). 4.1.4 Type IV—Wall Sheathing.
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
4
the ASTM website. Available from the U.S. Department of Housing and Urban Development,
3
Withdrawn. Construction Standards Division, HUD Building, Washington, DC 20410.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C208–08
1 1
4.1.4.1 Grade 1—Regular, for use as wall sheathing in 6.2 Roof products with a thickness of 1 ⁄2 in., 2 ⁄2 in., or
frame construction. greater, are post-laminated using thinner board stock whose
4.1.4.2 Grade 2—Structural, for use as wall sheathing in properties are covered in Table 1.
frameconstruction.Wheninstalledi
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:C208–95 (Reapproved 2001) Designation: C 208 – 08
Standard Specification for
1
Cellulosic Fiber Insulating Board
This standard is issued under the fixed designation C208; 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 (´) 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
1.1 This specification covers the principal cellulosic fiber insulating board types, grades, and sizes. Requirements are specified
for composition, construction, physical properties, tolerances, sampling procedures, and test methods.
1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.Themetricvaluesgiveninparenthesesareprovided
for information only.
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 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.
2. Referenced Documents
2
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation
C209 Test Methods for Cellulosic Fiber Insulating Board
C390Criteria Practice for Sampling and Acceptance of Preformed Thermal Insulation Lots
C846 Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing
D1037 Test Methods for Evaluating Properties of Wood-Base Fiber and Particle Panel Materials
D1554Definitions of Terms Terminology Relating to Wood-Base Fiber and Particle Panel Materials
D2164 Methods of Testing Structural Insulating Roof Deck
E72 Test Methods of Conducting Strength Tests of Panels for Building Construction
2.2 Federal Standard:
3
4900.1 Rev-1 U.S. Dept. of Housing and Urban Development Minimum Property Standards, One andTwo Family Dwellings
3. Terminology
3.1 For definitions of terms used in this specification, see Terminology C168 and Definitions D1554.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 cellulosic fiber insulating board—a fibrous-felted, homogeneous panel made from ligno-cellulosic fibers (usually wood
3 3 3 3
or cane) and having a density of less than 31 lb/ft (497 kg/m ) but more than 10 lb/ft (160 kg/m ).
3.2.1.1 Discussion—Cellulosic fiber insulating board is characterized by an integral bond which is produced by interfelting of
the fibers, but which has not been consolidated under heat and pressure as a separate stage in manufacture. Other materials may
be added during manufacture to improve certain properties.
4. Classification
4.1 Insulating board covered by this specification consists of six types:
1
This specification is under the jurisdiction ofASTM Committee C-16C16 onThermal Insulation and is the direct responsibility of Subcommittee C16.22 on Organic and
Nonhomogeneous Inorganic Thermal Insulations.
Current edition approved Feb. 15, 1995.Aug. 1, 2008. Published April 1995.August 2008. Originally published as C208–46T.approved in 1946. Last previous edition
approved in 2001 as C208–945 (2001).
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] Annual Book of ASTM Standards
, Vol 04.06.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 04.10.
3
Available from the U.S. Department of Housing and Urban Development, Construction Standards Division, HUD Building, Washington, DC 20410.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C208–08
4.1.1 Type I—Sound deadening board, for use in wall assemblies to control sound transmissions.
4.1.2 Type II—Roof insulation board, for use in various roofing systems.
4.1.2.1 Grade 1—Primarily for use under built up roof systems.
4.1.2.2 Grade 2—Primarily for use under single-ply roofing systems
...