Standard Specification for Cellulosic Fiber Insulating Board

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 the standard. The metric values given in parentheses are provided for information only.
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.

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ASTM C208-95 - Standard Specification for Cellulosic Fiber Insulating Board
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NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 208 – 95
Standard Specification for
1
Cellulosic Fiber Insulating Board
This standard is issued under the fixed designation C 208; 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 (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 4900.1 Rev-1 U.S. Dept. of Housing and Urban Develop-
ment Minimum Property Standards, One and Two Family
1.1 This specification covers the principal cellulosic fiber
5
Dwellings
insulating board types, grades, and sizes. Requirements are
specified for composition, construction, physical properties,
3. Terminology
tolerances, sampling procedures, and test methods.
3.1 For definitions of terms used in this specification, see
1.2 The values stated in inch-pound units are to be regarded
Terminology C 168 and Definitions D 1554.
as the standard. The metric values given in parentheses are
3.2 Definitions of Terms Specific to This Standard:
provided for information only.
3.2.1 cellulosic fiber insulating board—a fibrous-felted,
1.3 When the installation or use of thermal insulation
homogeneous panel made from ligno-cellulosic fibers (usually
materials, accessories, and systems may pose safety or health
3
wood or cane) and having a density of less than 31 lb/ft (497
problems, the manufacturer shall provide the user appropriate
3 3 3
kg/m ) but more than 10 lb/ft (160 kg/m ).
current information regarding any known problems associated
3.2.1.1 Discussion—Cellulosic fiber insulating board is
with the recommended use of the company’s products and shall
characterized by an integral bond which is produced by
also recommend protective measures to be employed in their
interfelting of the fibers, but which has not been consolidated
safe utilization. The user shall establish appropriate safety and
under heat and pressure as a separate stage in manufacture.
health practices and determine the applicability of regulatory
Other materials may be added during manufacture to improve
requirements prior to use.
certain properties.
2. Referenced Documents
4. Classification
2.1 ASTM Standards:
4.1 Insulating board covered by this specification consists of
C 168 Terminology Relating to Thermal Insulating Materi-
2 six types:
als
2
4.1.1 Type I—Sound deadening board, for use in wall
C 209 Test Methods for Cellulosic Fiber Insulating Board
assemblies to control sound transmissions.
C 390 Criteria for Sampling and Acceptance of Preformed
2
4.1.2 Type II—Roof insulation board, for use in various
Thermal Insulation Lots
roofing systems.
C 846 Practice for Application of Cellulosic Fiber Insulat-
2
4.1.2.1 Grade 1—Primarily for use under built up roof
ing Board for Wall Sheathing
systems.
D 1037 Test Methods for Evaluating Properties of Wood-
3 4.1.2.2 Grade 2—Primarily for use under single-ply roofing
Base Fiber and Particle Panel Materials
systems.
D 1554 Definitions of Terms Relating to Wood-Base Fiber
3 4.1.3 Type III—Ceiling tiles and panels.
and Particle Panel Materials
4.1.3.1 Grade 1—Nonacoustical, for use as decorative wall
D 2164 Methods of Testing Structural Insulating Roof
3 and ceiling coverings.
Deck
4.1.3.2 Grade 2—Acoustical, for use as decorative, sound
E 72 Methods of Conducting Strength Tests of Panels for
4 absorbing wall and ceiling coverings.
Building Construction
4.1.4 Type IV—Wall Sheathing.
2.2 Federal Standard:
4.1.4.1 Grade 1—Regular, for use as wall sheathing in
frame construction.
1
4.1.4.2 Grade 2—Structural, for use as wall sheathing in
This specification is under the jurisdiction of ASTM Committee C-16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on
frame construction. When installed in accordance with Practice
Organic and Nonhomogeneous Inorganic Thermal Insulations.
C 846, structural wall sheathing provides adequate racking
Current edition approved Feb. 15, 1995. Published April 1995. Originally
published as C 208 – 46 T. Last previous edition C 208 – 94.
2
Annual Book of ASTM Standards, Vol 04.06.
3 5
Annual Book of ASTM Standards, Vol 04.10. Available from the U.S. Department of Housing and Urban Development,
4
Annual Book of ASTM Standards, Vol 04.07. Construction Standards Division, HUD Building, Washington, DC 20410.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
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C 208
resistance for use as exterior wall bracing. free of cracks, lumps, excessive departure from planeness, or
4.1.5 Type V—Backer board, for use behind exterior finish other defects that affect performance or appearance.
in wall assembl
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