ASTM C1177/C1177M-06

Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing

ABSTRACT
This specification covers the requirements for glass mat gypsum substrates designed to be used as exterior substrate or sheathing for weather barriers. The substrates shall consist of a noncombustible water-resistant gypsum core, surfaced with glass mat partially or completely embedded in the core. Materials shall be sampled, tested, and conform accordingly to specified physical property (flexural strength, humidified deflection, nail pull resistance, water resistance, and core, end, and edge hardness) and dimensional (thickness, width, length, end squareness, and edges) requirements.
SCOPE
1.1 This specification covers glass mat gypsum substrate, which is designed to be used as an exterior substrate for a weather barrier.
1.2 The values stated in either inch-pound units or SI (metric) are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system shall be used independently of the other. Values from the two systems shall not be combined.
1.3 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.

General Information

• Status: Historical
• Publication Date: 31-May-2006
• ICS: 91.100.10 - Cement. Gypsum. Lime. Mortar
• Technical Committee: C11 - Gypsum and Related Building Materials and Systems
• Drafting Committee: C11.01 - Specifications and Test Methods for Gypsum Products

Relations

• Replaces: ASTM C1177/C1177M-04e1 - Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing
• Effective Date: 01-Jun-2006
• Replaced By: ASTM C1177/C1177M-08 - Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing
• Effective Date: 15-Sep-2008
• Referred By: ASTM C1397-13(2019) - Standard Practice for Application of Class PB Exterior Insulation and Finish Systems (EIFS) and EIFS with Drainage
• Effective Date: 01-Jun-2006
• Referred By: ASTM C1535-05(2023) - Standard Practice for Application of Exterior Insulation and Finish Systems Class PI
• Effective Date: 01-Jun-2006
• Referred By: ASTM C1280-18 - Standard Specification for Application of Exterior Gypsum Panel Products for Use as Sheathing
• Effective Date: 01-Jun-2006
• Referred By: ASTM C1858-17a(2021) - Standard Practice for Design, Construction, and Material Requirements for Direct Hung Suspended T-bar Type Ceiling Systems Intended to Receive Gypsum Panel Products in Areas Subject to Earthquake Ground Motions
• Effective Date: 01-Jun-2006
• Referred By: ASTM C1789-14(2018) - Standard Test Method for Calibration of Hand-Held Moisture Meters on Gypsum Panels
• Effective Date: 01-Jun-2006
• Referred By: ASTM C1881-20 - Standard Guide for Closed-Loop Recycling of Scrap Gypsum Panel Products
• Effective Date: 01-Jun-2006
• Referred By: ASTM C1516-05(2023) - Standard Practice for Application of Direct-Applied Exterior Finish Systems
• Effective Date: 01-Jun-2006
• Referred By: ASTM C1289-23 - Standard Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board
• Effective Date: 01-Jun-2006

Standards Content (Sample)

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 1177/C 1177M – 06
Standard Specification for
1
Glass Mat Gypsum Substrate for Use as Sheathing
This standard is issued under the fixed designation C 1177/C 1177M; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope* 3.2.2 edge, n—the bound edge as manufactured.
3.2.3 weather barrier, n—a material that prevents the pas-
1.1 This specification covers glass mat gypsum substrate,
sage of rain, sleet and snow.
which is designed to be used as an exterior substrate for a
weather barrier.
4. Materials and Manufacture
1.2 The values stated in either inch-pound units or SI
4.1 GlassMatGypsumSubstrate shallconsistofanoncom-
(metric) are to be regarded separately as standard. Within the
bustiblewater-resistantcore,essentiallygypsum,surfacedwith
text, the SI units are shown in brackets. The values stated in
glass mat partially, or completely embedded in the core.
each system shall be used independently of the other. Values
4.2 Glass Mat Gypsum Substrate, type X (special fire-
from the two systems shall not be combined.
resistant) designates glass mat gypsum substrate complying
1.3 The text of this standard references notes and footnotes
with this specification that provide not less than 1-h fire
that provide explanatory material. These notes and footnotes
5 3
resistance rating for substrate ⁄8 in. [15.9 mm] thick or ⁄4-h
(excluding those in tables and figures) shall not be considered
1
fire resistance rating for substrate ⁄2 in. [12.7 mm] thick,
as requirements of the standard.
applied parallel with and on each side of load bearing 2 by 4
2. Referenced Documents wood studs spaced 16 in. [406 mm] on center with 6d coated
7
2
nails, 1 ⁄8 in. [48 mm] long, 0.0915 in. [2.3 mm] diameter
2.1 ASTM Standards:
1
shank, ⁄4 in. [6.4 mm] diameter heads, spaced 7 in. [178 mm]
C11 Terminology Relating to Gypsum and Related Build-
on center with glass mat gypsum substrate joints staggered 16
ing Materials and Systems
in. [406 mm] on each side of the partition and tested in
C 473 Test Methods for Physical Testing of Gypsum Panel
accordance with Test MethodsE119.
Products
C 645 Specification for Nonstructural Steel Framing Mem-
NOTE 1—Consult manufacturers for independent test data on assembly
bers
details and fire resistance ratings for other types of construction. See fire
test reports or listings from recognized fire testing laboratories for
C 1264 Specification for Sampling, Inspection, Rejection,
assembly particulars, materials, and ratings.
Certification, Packaging, Marking, Shipping, Handling,
and Storage of Gypsum Panel Products
5. Physical Properties
E119 Test Methods for Fire Tests of Building Construction
5.1 Specimens shall be taken from the samples obtained in
and Materials
accordance with Specification C 1264.
3. Terminology 5.2 Specimens shall be tested in accordance with Methods
C 473.
3.1 Definitions shall be in accordance with Terminology
5.2.1 Flexural Strength—The specimens shall be tested face
C11.
up and face down. The average breaking load shall not be less
3.2 Definitions of Terms Specific to This Standard:
than the following:
3.2.1 glass mat, n—a mat of glass fibers with or without a
Method B
binder.
Load, lbf [N] Bearing Load, lbf [N] Bearing edges
Thickness, edges perpendicular to parallel to the substrate
1
This specification is under the jurisdiction of ASTM Committee C11 on
in. [mm] the substrate edge edge
Gypsum and Related Building Materials and Systems and is the direct responsibility
of Subcommittee C11.01 on Specifications and Test Methods for Gypsum Products. 1
⁄4 [6.4] 50 [222] 40 [178]
Current edition approved June 1, 2006. Published June 2006. Originally 7
⁄16 [11.1] 88 [394] 70 [314]
e1
1
approvedin1991.Lastpreviouseditionapprovedin2004asC 1177/C 1177M–04 .
⁄2 [12.7] 100 [445] 80 [356]
2
5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
⁄8 [15.9] 140 [623] 100 [445]
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C 1177/C 1177M – 06
5.2.2 Humidified Deflection—Specimens shall have an av- 6.2.2 Width—The nominal width shall be up to 48 in. [1220
1
erage deflection of not more than the following: mm], with tolerance of ⁄8 in. [3 mm] under the specified
width.
Thickness, Humidified deflection,
in. [mm] eighths of
...