ASTM C208

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.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

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

C168 Terminology Relating to Thermal Insulation
C209 Test Methods for Cellulosic Fiber Insulating Board
C390 Criteria 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
D1554 Definitions of Terms Relating to Wood-Base Fiber and Particle Panel Materials
D2164 Methods of Testing Structural Insulating Roof Deck
E72 Methods of Conducting Strength Tests of Panels for Building Construction
4900.1 Rev-1 U.S. Dept. of Housing and Urban Development Minimum Property Standards, One and Two Family Dwellings

Index Terms

backer board; ceiling tiles and panels; cellulosic fiber insulating board; decorative insulating board; fiberboard; roof deck; roof insulation board; sound deadening board; thermal insulation; wall sheathing; Abrading; Board thermal insulation--specifications; Ceiling tiles and panels; Cellular thermal insulation--specifications; Cellulose fiber thermal insulation--specifications; Fiberboard; Flexural testing--insulating materials/applications; Insulating board; Roof insulation--specifications; Sound deadening board; Structural thermal insulation applications--specifications; Wall construction--specifications; Walls--specifications; Wall sheathing; ICS Number Code 91.100.60 (Thermal and sound insulating materials)

Citing ASTM Standards

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