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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31-Dec-2000
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ASTM C208-95(2001) - 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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C 208 – 95 (Reapproved 2001)
Standard Specification for
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 (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
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 C168 and Definitions D1554.
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
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
withtherecommendeduseofthecompany’sproductsandshall
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 Insulatingboardcoveredbythisspecificationconsistsof
C168 Terminology Relating to Thermal Insulation
2 six types:
C209 Test Methods for Cellulosic Fiber Insulating Board
4.1.1 Type I—Sound deadening board, for use in wall
C390 Criteria for Sampling and Acceptance of Preformed
2 assemblies to control sound transmissions.
Thermal Insulation Lots
4.1.2 Type II—Roof insulation board, for use in various
C846 Practice for Application of Cellulosic Fiber Insulat-
2 roofing systems.
ing Board for Wall Sheathing
4.1.2.1 Grade 1—Primarily for use under built up roof
D1037 Test Methods for Evaluating Properties of Wood-
3 systems.
Base Fiber and Particle Panel Materials
4.1.2.2 Grade 2—Primarilyforuseundersingle-plyroofing
D1554 Definitions of Terms Relating to Wood-Base Fiber
3 systems.
and Particle Panel Materials
4.1.3 Type III—Ceiling tiles and panels.
D 2164 Methods of Testing Structural Insulating Roof
3 4.1.3.1 Grade 1—Nonacoustical, for use as decorative wall
Deck
and ceiling coverings.
E72 Methods of Conducting Strength Tests of Panels for
4.1.3.2 Grade 2—Acoustical, for use as decorative, sound
Building Construction
absorbing wall and ceiling coverings.
2.2 Federal Standard:
4.1.4 Type IV—Wall Sheathing.
4.1.4.1 Grade 1—Regular, for use as wall sheathing in
frame construction.
This specification is under the jurisdiction of ASTM Committee C-16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on 4.1.4.2 Grade 2—Structural, for use as wall sheathing in
Organic and Nonhomogeneous Inorganic Thermal Insulations.
frameconstruction.WheninstalledinaccordancewithPractice
Current edition approved Feb. 15, 1995. Published April 1995. Originally
published as C208–46T. Last previous edition C208–94.
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,
Annual Book of ASTM Standards, Vol 04.11. 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.
C 208 – 95 (2001)
C846, structural wall sheathing provides adequate racking free of cracks, lumps, excessive departure from planeness, or
resistance for use as exterior wall bracing. other defects that affect performance or appearance.
4.1.5 Type V—Backer board, for use behind exterior finish 8.2 Surface Finish—The surface finishes of the board shall
in wall assemblies where there are no structural requirements. be as specified in Table 2.
4.1.6 Type VI—Roof deck, for use as roof decking for flat, 8.3 Edge Details—The edge details of the board shall be as
pitched, or shed-type, open-beamed, ceiling-roof construction. specified in Table 2.
4.2 On occasion these products are used for other applica-
9. Sampling
tions.Themanufacturerandthepurchasershallagreeuponany
special requirements for such end uses. 9.1 Unless otherwise specified in the purchase order or
contract, the material shall be sampled in accordance with
5. Materials and Manufacture
Criteria C390.
5.1 Cellulosic fiber insulating board shall be manufactured
fromrefinedorpartiallyrefinedligno-cellulosic(woodorcane) 10. Test Methods
fibers, by a felting or molding process, into homogeneous
10.1 Unless otherwise specified in Table 1, determine the
panels. Other ingredients may be added to provide or improve
properties enumerated in this specification in accordance with
certain properties such as strength and water resistance, in
Test Methods C209.
addition to surface finishes for decorative products and special
coatings which impart resistance to flame spread. The material 11. Inspection and Resubmittal
is subjected to such drying temperatures as to effect complete
11.1 Thefollowingrequirementsaregenerallyemployedfor
destruction of rot producing fungi.
purposes of acceptance sampling of lots or shipments of
5.2 The finished board may be either single or multiple ply.
qualified material:
When multiple-ply boards are supplied, a suitable moisture-
11.1.1 Surface finish,
resistant adhesive shall be used to join the plies.
11.1.2 Edge detail,
11.1.3 Dimensional tolerances, and
6. Physical Properties
11.1.4 Workmanship.
6.1 The insulating board shall conform to the physical
11.2 When agreed upon between the purchaser and the
properties in Table 1.
manufacturerorsupplier,theinspectionofthematerialshallbe
1 1
6.2 Roof products with a thickness of 1 ⁄2 in., 2 ⁄2 in., or
made at either the point of shipment or point of delivery.
greater, are post-laminated using thinner board stock whose
11.3 In case of rejection, the manufacturer or supplier shall
properties are covered in Table 1.
have the right to reinspect the rejected shipment and resubmit
the lot after removal of the portion of the shipment not
7. Dimensions, Mass, and Permissible Variations
conforming to the specified requirements.
7.1 The materials covered by this specification are available
in the sizes shown in Table 2.
12. Product Marking
7.2 Length and Width Tolerances—Unless otherwise speci-
12.1 When specified, each panel or unit shall be labeled
fied, the tolerance for length and width of any size panel shall
1 with the manufacturer’s name or trademark, the designation of
by+0,− ⁄16 in. per ft (+0,−5.2 mm/m), but the total
3 this specification, and type and grade. The label may also
tolerance in any dimension shall not exceed+0,− ⁄8 in. (+0
include the mark of a third party certification organization.
mm,−10 mm).
7.3 Thickness Tolerance—The thickness tolerances are
13. Keywords
shown in Table 3.
13.1 backer board; ceiling tiles and panels; cellulosic fiber
8. Workmanship, Finish, and Appearance
insulating board; decorative insulating board; fiberboard; roof
8.1 Defects—Theinsulatingboardshallhavenodefectsthat deck; roof insulation board; sound de
...

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