ASTM C208-08a

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: 30-Nov-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 C208-08e1 - Standard Specification for Cellulosic Fiber Insulating Board
• Effective Date: 01-Dec-2008
• Replaced By: ASTM C208-12 - Standard Specification for Cellulosic Fiber Insulating Board
• Effective Date: 01-Sep-2012
• Referred By: ASTM C209-20 - Standard Test Methods for Cellulosic Fiber Insulating Board
• Effective Date: 01-Dec-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-Dec-2008
• Referred By: ASTM C1289-23 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board
• Effective Date: 01-Dec-2008
• Referred By: ASTM C846-16(2021) - Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing
• Effective Date: 01-Dec-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:C208 −08a
StandardSpecification 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. 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 D2164Methods of Testing Structural Insulating Roof Deck
3
(Withdrawn 2005)
1.1 This specification covers the principal cellulosic fiber
E72Test Methods of Conducting Strength Tests of Panels
insulating board types, grades, and sizes. Requirements are
for Building Construction
specified for composition, construction, physical properties,
2.2 Federal Standard:
tolerances, sampling procedures, and test methods.
4900.1Rev-1 U.S. Dept. of Housing and Urban Develop-
1.2 The values stated in inch-pound units are to be regarded
ment Minimum Property Standards, One and Two Family
as standard. The values given in parentheses are mathematical
4
Dwellings
conversions to SI units that are provided for information only
and are not considered standard.
3. Terminology
1.3 When the installation or use of thermal insulation
3.1 For definitions of terms used in this specification, see
materials, accessories, and systems may pose safety or health
Terminology C168 and Definitions D1554.
problems, the manufacturer shall provide the user appropriate
3.2 Definitions of Terms Specific to This Standard:
current information regarding any known problems associated
3.2.1 cellulosic fiber insulating board—a fibrous-felted, ho-
withtherecommendeduseofthecompany’sproductsandshall
mogeneous panel made from ligno-cellulosic fibers (usually
also recommend protective measures to be employed in their
3
wood or cane) and having a density of less than 31 lb/ft (497
safe utilization. The user shall establish appropriate safety and
3 3 3
kg/m ) but more than 10 lb/ft (160 kg/m ).
health practices and determine the applicability of regulatory
3.2.1.1 Discussion—Cellulosic fiber insulating board is
requirements prior to use.
characterized by an integral bond which is produced by
interfelting of the fibers, but which has not been consolidated
2. Referenced Documents
under heat and pressure as a separate stage in manufacture.
2
2.1 ASTM Standards:
Other materials may be added during manufacture to improve
C168Terminology Relating to Thermal Insulation
certain properties.
C209Test Methods for Cellulosic Fiber Insulating Board
C390Practice for Sampling and Acceptance of Thermal
4. Classification
Insulation Lots
4.1 Insulatingboardcoveredbythisspecificationconsistsof
C846Practice forApplication of Cellulosic Fiber Insulating
six types:
Board for Wall Sheathing
4.1.1 Type I—Sound deadening board, for use in wall
D1037Test Methods for Evaluating Properties of Wood-
assemblies to control sound transmissions.
Base Fiber and Particle Panel Materials
4.1.2 Type II—Roof insulation board, for use in various
D1554Terminology Relating to Wood-Base Fiber and Par-
roofing systems.
ticle Panel Materials
4.1.2.1 Grade 1—Primarily for use under built-up, and
modified bitumen roof systems.
4.1.2.2 Grade 2—Primarily for use under single-ply, built-
1
This specification is under the jurisdiction of ASTM Committee C16 on
up, and modified bitumen roofing systems.
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
4.1.3 Type III—Ceiling tiles and panels.
Organic and Nonhomogeneous Inorganic Thermal Insulations.
Current edition approved Dec. 1, 2008. Published December 2008. Originally
´1
approved in 1946. Last previous edition approved in 2008 as C208–08 . DOI:
10.1520/C0208-08A.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or The last approved version of this historical standard is referenced on
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM www.astm.org.
4
Standards volumeinformation,refertothestandard’sDocumentSummarypageon Available from the U.S. Department of Housing and Urban Development,
the ASTM website. 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 ----------------------
C208−08a
4.1.3.1 Grade 1—Nonacoustical, for use as decorative wall 5.2 The finished board may be either single or multiple ply.
and ceiling coverings. When multiple-ply boards are supplied, a suitable moisture-
4.1.3.2 Grade 2—Acoustical, for use as decorative, sound resistant adhesive shall be used to join the plies.
absorbing wall and ceiling coverings.
4.1.4 Type IV—Wall Sheathin
...

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.
´1
Designation:C208–08 Designation: C 208 – 08a
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
´ NOTE—Table1 footnotes were editorially corrected in September 2008.
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.
1.2 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
C390 Practice for Sampling and Acceptance of 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
D1554 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 and Two 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:
4.1.1 Type I—Sound deadening board, for use in wall assemblies to control sound transmissions.
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 Aug.Dec. 1, 2008. Published AugustDecember 2008. Originally approved in 1946. Last previous edition approved in 20012008 as C208–95
´1
(2001). C208–08 .
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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 ----------------------
C 208 – 08a
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. —Primarily for use under built-up, and modified bitumen roof
systems.
4.1.2.2 Grade 2—Primarily for use under single-ply roofing systems. —Primarily for use under single-ply, built-up, and
modified bitumen roofing systems.
4.1.3 Type III—Ceiling tiles
...