ASTM C991-15
Standard Specification for Flexible Fibrous Glass Insulation for Metal Buildings

Standard No.
ASTM C991-15
Release Date
2015
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM C991-16
Latest
ASTM C991-23
Scope

1.1 This specification covers the classification, composition, and physical properties of flexible fibrous glass insulation for use in metal building roofs and walls.

1.2 The basic insulation blanket is designed to be post-processed by a laminating process that applies an adhesive bonded facing.

1.3 The thermal values measured in accordance with this specification for both pre-processed and post-processed insulation are for the insulation only and do not include the effects of air-film surface resistance, changes in mean temperature, or compression of insulation at the framing members of the building, through metal conductance of fasteners and other parallel heat-transfer paths due to design or installation techniques.

1.4 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.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.

ASTM C991-15 history

  • 2023 ASTM C991-23 Standard Specification for Flexible Fibrous Glass Insulation for Metal Buildings
  • 2016 ASTM C991-16 Standard Specification for Flexible Fibrous Glass Insulation for Metal Buildings
  • 2015 ASTM C991-15 Standard Specification for Flexible Fibrous Glass Insulation for Metal Buildings
  • 2008 ASTM C991-08e1 Standard Specification for Flexible Fibrous Glass Insulation for Metal Buildings
  • 2008 ASTM C991-08 Standard Specification for Flexible Fibrous Glass Insulation for Metal Buildings
  • 2003 ASTM C991-03 Standard Specification for Flexible Glass Fiber Insulation for Metal Buildings
  • 2000 ASTM C991-00 Standard Specification for Flexible Glass Fiber Insulation for Metal Buildings
  • 1998 ASTM C991-98 Standard Specification for Flexible Glass Fiber Insulation for Metal Buildings



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