ASTM C991-23
Standard Specification for Flexible Fibrous Glass Insulation for Metal Buildings

Standard No.

ASTM C991-23

Release Date

2023

Published By

American Society for Testing and Materials (ASTM)

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 postprocessed 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM C991-23 Referenced Document

• ASTM C1045 Standard Practice for Calculating Thermal Transmission Properties Under Steady-State Conditions
• ASTM C1104/C1104M Standard Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber Insulation
• ASTM C1136 Standard Specification for Flexible, Low Permeance Vapor Retarders for Thermal Insulation
• ASTM C1304 Standard Test Method for Assessing the Odor Emission of Thermal Insulation Materials
• ASTM C1338 Standard Test Method for Determining Fungi Resistance of Insulation Materials and Facings
• ASTM C1617 Standard Practice for Quantitative Accelerated Laboratory Evaluation of Extraction Solutions Containing Ions Leached from Thermal Insulation on Aqueous Corrosion of Metals
• ASTM C167 Standard Test Methods for Thickness and Density of Blanket or Batt Thermal Insulations
• ASTM C168 Standard Terminology Relating to Thermal Insulation
• ASTM C177 Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus
• ASTM C390 Standard Criteria for Sampling and Acceptance of Preformed Thermal Insulation Lots
• ASTM C518 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
• ASTM C653 Standard Guide for Determination of the Thermal Resistance of Low-Density Blanket-Type Mineral Fiber Insulation
• ASTM C665 Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing
• ASTM C755 Standard Practice for Selection of Vapor Retarders for Thermal Insulation
• ASTM E136 Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750_oC
• ASTM E2988 Standard Practice for Specimen Preparation and Mounting of Flexible Fibrous Glass Insulation for Metal Buildings to Assess Surface Burning Characteristics
• ASTM E84 Standard Test Method for Surface Burning Characteristics of Building Materials
• CAN/ULC-S102 

ASTM C991-23 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