ASTM C1467/C1467M-00(2021)

Standard Specification for Installation of Molded Glass Fiber Reinforced Gypsum Parts

ABSTRACT
This specification covers the installation of molded glass fiber reinforced gypsum (GRG) parts. Molded glass fiber reinforced gypsum parts shall conform to environment conditions, substrate preparation, installation, and finishing requirements specified.
SCOPE
1.1 This specification covers the installation of molded glass fiber reinforced gypsum (GRG) parts.  
1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as the standard. Within the text, SI units are shown in brackets. The values stated in each shall be used independent of the other. Values from the two systems shall not be combined.  
1.3 All references to finishes, dimensions and tolerances shall refer to the finished surface of the part.  
1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.5 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.

General Information

• Status: Published
• Publication Date: 31-Mar-2021
• ICS: 81.040.20 - Glass in building
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.03 - Specifications for the Application of Gypsum and Other Products in Assemblies

Relations

• Refers: ASTM C840-23 - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 01-Oct-2023
• Refers: ASTM C754-20 - Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products
• Effective Date: 01-May-2020
• Refers: ASTM C1007-20 - Standard Specification for Installation of Load Bearing (Transverse and Axial) Steel Studs and Related Accessories
• Effective Date: 01-May-2020
• Refers: ASTM C840-19b - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 01-Nov-2019
• Refers: ASTM C840-19a - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 01-Oct-2019
• Refers: ASTM C840-19 - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 01-Jun-2019
• Refers: ASTM C840-18b - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 15-Nov-2018
• Refers: ASTM C11-18a - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 01-Oct-2018
• Refers: ASTM C840-18a - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 01-Oct-2018
• Refers: ASTM C840-18 - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 01-Jul-2018
• Refers: ASTM C11-18 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 01-Jun-2018
• Refers: ASTM C754-18 - Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products
• Effective Date: 01-Apr-2018
• Refers: ASTM C840-17a - Standard Specification for Application and Finishing of Gypsum Board
• Effective Date: 01-Oct-2017
• Refers: ASTM C11-17a - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 01-Oct-2017
• Refers: ASTM C11-17 - Standard Terminology Relating to Gypsum and Related Building Materials and Systems
• Effective Date: 15-May-2017

Overview

ASTM C1467/C1467M-00(2021): Standard Specification for Installation of Molded Glass Fiber Reinforced Gypsum Parts provides comprehensive requirements for installing molded glass fiber reinforced gypsum (GRG) architectural components. Established by ASTM International, this standard applies to both inch-pound and SI (metric) units, ensuring international compatibility. The specification focuses on environmental conditions, substrate preparation, installation methods, tolerances, and finishing requirements for GRG parts.

Architects, contractors, and building professionals rely on ASTM C1467/C1467M-00(2021) to guarantee proper installation, aesthetic quality, and long-term performance of GRG elements in various construction projects.

Key Topics

• Environmental Conditions: Installation should occur at a minimum room temperature of 40 °F [4 °C], with adhesive bonding requiring at least 50 °F [10 °C]. Temporary heating should not exceed 95 °F [35 °C]. GRG parts must be protected from direct exposure to rain, snow, sunlight, and excessive weather. Installation in conditions of excessive humidity is not recommended; optimal conditions are 70 °F [21 °C] with 50% relative humidity.
• Substrate Preparation: Substrates must be straight, true (within 1/8 in. in 8 ft [3 mm in 2500 mm]), and free from obstructions. Metal framing must comply with ASTM C754 or C1007, ensuring proper size, alignment, and load support for GRG installation.
• Installation Methodology: GRG parts must be installed to specified tolerances and manufacturers' instructions. Joints should not exceed 1/4 in. [6 mm], and adjoining surfaces should not differ by more than 1/8 in. [3 mm]. Proper fastening devices and substrate compatibility are essential for long-term stability.
• Finishing Requirements: GRG parts must be finished as per manufacturer guidelines. Surfaces scheduled for gloss or semi-gloss finishes or critical lighting should be prepared to Level 5 standard per ASTM C840. GRG surfaces are delivered primer-ready.
• Handling and Storage: GRG components must be stored per manufacturer recommendations on clean, dry surfaces. Exposure to moisture, sunlight, and other weather conditions should be avoided. Stacking should only occur with manufacturer approval.

Applications

Installation of molded glass fiber reinforced gypsum (GRG) parts is prevalent in commercial, institutional, and high-end residential construction. Key applications include:

• Architectural Elements: Columns, curved walls, soffits, domes, cornices, and other decorative features benefit from the lightweight, high-performance, and moldability of GRG components.
• Interior Finishes: Ceiling panels, light coves, and custom interior shapes where smooth finishes and complex geometries are required.
• Renovation Projects: GRG's adaptability makes it suitable for restoring historic interiors and integrating modern design elements with precision and durability.

Adhering to ASTM C1467/C1467M-00(2021) ensures that installations meet stringent tolerances, quality, and aesthetic demands for GRG applications.

Related Standards

When referencing ASTM C1467/C1467M-00(2021), consider these related ASTM standards for comprehensive project specifications:

• ASTM C1381/C1381M: Specification for Molded Glass Fiber Reinforced Gypsum Parts (material requirements).
• ASTM C11: Terminology Relating to Gypsum and Related Building Materials and Systems.
• ASTM C754: Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products.
• ASTM C1007: Specification for Installation of Load Bearing (Transverse and Axial) Steel Studs and Related Accessories.
• ASTM C840: Specification for Application and Finishing of Gypsum Board.

Utilizing these standards in conjunction supports the successful specification, installation, and finishing of GRG architectural components, promoting best practices in the construction industry.

Keywords: Molded glass fiber reinforced gypsum, GRG installation, ASTM C1467, gypsum architectural parts, gypsum specification, substrate preparation, finishing requirements, building standards, gypsum construction.

Standards Content (Sample)

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.
Designation: C1467/C1467M −00 (Reapproved 2021)
Standard Specification for
Installation of Molded Glass Fiber Reinforced Gypsum
Parts
This standard is issued under the fixed designation C1467/C1467M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope C1381/C1381M Specification for Molded Glass Fiber Rein-
forced Gypsum Parts
1.1 Thisspecificationcoverstheinstallationofmoldedglass
fiber reinforced gypsum (GRG) parts.
3. Terminology
1.2 The values stated in either inch-pound units or SI
3.1 Definitions—Definitionsoftermsshallbeinaccordance
(metric) are to be regarded separately as the standard. Within
with Terminology C11.
the text, SI units are shown in brackets. The values stated in
each shall be used independent of the other. Values from the 3.2 Definitions of Terms Specific to This Standard:
two systems shall not be combined. 3.2.1 critical lighting, n—strong side lighting from natural
or artificial light sources.
1.3 All references to finishes, dimensions and tolerances
3.2.2 primer, n—paint material formulated to fill the pores
shall refer to the finished surface of the part.
and equalize the suction difference between the GRG part and
1.4 The text of this standard references notes and footnotes
finishing compounds used.
that provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered
4. Materials
as requirements of the standard.
4.1 Molded GRG parts shall meet the requirements of
1.5 This international standard was developed in accor-
Specification C1381/C1381M.
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
5. Environmental Conditions
Development of International Standards, Guides and Recom-
5.1 Room temperature shall be maintained at not less than
mendations issued by the World Trade Organization Technical
40 °F [4 °C] during the installation of GRG parts except when
Barriers to Trade (TBT) Committee.
adhesive is used for the bonding or attachment of parts to each
2. Referenced Documents
other or to a substrate. For the bonding of adhesive and joint
treatment the room temperature shall be maintained at not less
2.1 ASTM Standards:
than 50 °F [10 °C] for 48 hours prior to application and
C11 Terminology Relating to Gypsum and Related Building
continuously thereafter until completely dry.
Materials and Systems
C754 Specification for Installation of Steel Framing Mem-
5.2 When a temporary heat source is used, the temperature
bers to Receive Screw-Attached Gypsum Panel Products
shall not exceed 95 °F [35 °C] in any given room or area.
C840 SpecificationforApplicationandFinishingofGypsum
5.3 InstalledGRGshallbeprotectedfromdirectexposureto
Board
rain, snow, sunlight and other excessive weather conditions.
C1007 Specification for Installation of Load Bearing (Trans-
verse and Axial) Steel Studs and Related Accessories NOTE 1—Installation in conditions of excessive humidity is not recom-
mended.TheidealconditionstoinstallmoldedGRGpartsis70°F[21°C]
and 50 % RH.
This specification is under the jurisdiction of ASTM Committee C11 on
Gypsum and Related Building Materials and Systems and is the direct responsibility
6. Substrate Preparation
ofSubcommitteeC11.03onSpecificationsfortheApplicationofGypsumandOther
Products in Assemblies.
6.1 SubstratestoacceptGRGpartsshallbeinstalledstraight
Current edition approved April 1, 2021. Published May 2021. Originally
and true within ⁄8
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