ASTM C846-94(2009)

Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing

SIGNIFICANCE AND USE
This standard provides recommendations for the installation in a safe and effective manner. Actual conditions may vary greatly, and additional care should be taken to ensure a safe and effective installation.
This standard presents requirements that are general in nature and considered practical. They are not intended as specific recommendations. The user should consult the manufacturer for recommended application methods and procedures.
This standard does not address the applicability of regulatory limitations. This is the responsibility of the user.
SCOPE
1.1 This practice covers the requirements for storing, handling, and application of cellulosic fiber insulating board products.
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 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 limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Mar-2009
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: C16 - Thermal Insulation
• Drafting Committee: C16.40 - Insulation Systems

Relations

• Replaces: ASTM C846-94(2003) - Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing
• Effective Date: 01-Apr-2009
• Referred By: ASTM C208-22 - Standard Specification for Cellulosic Fiber Insulating Board
• Effective Date: 01-Apr-2009

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C846 − 94(Reapproved 2009)
Standard Practice for
Application of Cellulosic Fiber Insulating Board for Wall
Sheathing
This standard is issued under the fixed designation C846; 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 3.1.1 exterior finish—the shingle, lap, or panel siding
material, masonry veneer, or stucco applied over the sheathing
1.1 This practice covers the requirements for storing,
as a protective, decorative exterior finish of the building.
handling, and application of cellulosic fiber insulating board
3.1.2 fasteners—nails, staples, or screws used for applica-
products.
tion of the sheathing.
1.2 The values stated in inch-pound units are to be regarded
3.1.3 framing members—those portions of the studs,
as standard. The values given in parentheses are mathematical
headers, bracing, and blocking which serve to receive the
conversions to SI units that are provided for information only
sheathing. Framing members can be wood or metal.
and are not considered standard.
3.1.4 regular wall sheathing—described in Definitions
1.3 This standard does not purport to address all of the
D1554 and Specification C208. It is 4 ft (1.22 m) wide with
safety concerns, if any, associated with its use. It is the
square-cut edges on all sides and ⁄2 in. (12.7 mm) in thickness.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3.1.5 structural wall sheathing—described in Definitions
bility of regulatory limitations prior to use.
D1554 and Specification C208. When installed in accordance
with Section 7, it is considered a structural sheathing providing
2. Referenced Documents
adequate racking resistance. It is 4 ft (1.22 m) wide and ⁄2 in.
2.1 ASTM Standards:
(12.7 mm) or ⁄32 in. (19.8 mm) in thickness with square-cut
C208 Specification for Cellulosic Fiber Insulating Board
edges on all sides.
D1554 Terminology Relating to Wood-Base Fiber and Par-
3.1.6 vertical application—sheathing applied with the long
ticle Panel Materials
edges parallel to the studs.
2.2 Voluntary Product Standard:
ANSI/AHAA194.1 Cellulosic Fiberboard
4. Significance and Use
2.3 Federal Specifications:
4.1 This standard provides recommendations for the instal-
FF-N-105-B with Interim Amendment 4 Nails, Brads,
lation in a safe and effective manner. Actual conditions may
Staples and Spikes: Wire Cut and Wrought
vary greatly, and additional care should be taken to ensure a
UU-B-790-A Building Paper, Vegetable Fiber: (Kraft,
safe and effective installation.
Waterproofed, Water Repellent and Fire Resistant)
4.2 This standard presents requirements that are general in
3. Terminology
nature and considered practical. They are not intended as
specific recommendations. The user should consult the manu-
3.1 Definitions of Terms Specific to This Standard:
facturerforrecommendedapplicationmethodsandprocedures.
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
4.3 This standard does not address the applicability of
Insulation and is the direct responsibility of Subcommittee C16.40 on Insulation
regulatory limitations. This is the responsibility of the user.
Systems.
Current edition approved April 1, 2009. Published August 2009. Originally
5. Materials
approved in 1976. Last previous edition approved in 2003 as C846 – 94 (2003).
DOI: 10.1520/C0846-94R09.
5.1 Sheathing shall conform to ANSI/AHA A194.1 and
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Specification C208.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
5.2 Nails for application of sheathing to wood framing shall
the ASTM website.
3 conform to Federal Specification FF-N-105-B, including In-
Available from American Hardboard Assoc., 1210 W. Northwest Highway,
Palatine, IL. terim Amendment 4, and shall be in accordance with Table 1.
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
1 25
5.3 Staples for application of ⁄2-in. and ⁄32-in. sheathing to
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
www.dodssp.daps.mil. wood framing shall meet the following requirements:
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C846 − 94 (2009)
TABLE 1 Nail Dimensions
Sheathing Thickness, Galvanized Steel Common
in. (mm) Roofing Nails Nails
Gage 11 11 ⁄2 (6d)
Length, min, in. (mm) 1 ⁄2 (38.1) 2 (50.8)
1 7 17
⁄2 (12.7) Head diameter, min, in. (mm) ⁄16 (11.1) ⁄64 (6.75)
A
Wire diameter, min, in. (mm) 0.120 (3.06) 0.1130 (2.87)
Gage 11 10 ⁄4 (8d)
3 1
Length, min, in. (mm) 1 ⁄4 (44.5) 2 ⁄2 (63.5)
25 7 9
⁄32 (19.8) Head diameter, min, in. (mm) ⁄16 (11.1) ⁄32 (7.14)
A
Wire diameter, min, in. (mm) 0.120 (3.06) 0.131 (3.33)
A
Prior to galvanizing.
7.1 Vertical Application (see Fig. 1)—Apply 4-ft (1.22-m)
Gage 16
1 25
Thickness, min, in. (mm) 0.057 (1.45)
wide by ⁄2-in. (12.7-mm) or by ⁄32-in. (19.8-mm) sheathing
Width, min, in. (mm) 0.063 (1.59)
vertically with long edges parallel to the vertical studs. Center
Length, min, in. (mm) 1 ⁄2 (38.1)
all joints over the framing members with a ⁄8-in. (3.18-mm)
Crown, min, in. (mm) ⁄16 (11.1)
Points chisel point 1
gap between edges. Leave a ⁄8-in. gap at doors, windows, and
divergent point
horizontal joints. Sheathing should extend from sill to plate. If
divergent chisel point
not, headers for adequate nailing should be provided at all
1 25
5.4 Screwsforapplicationof ⁄2-in.and ⁄32-in.sheathingon
1 25
horizontal joints.Apply fasteners for ⁄2-in. or ⁄32-in. material
14-gage (0.075-in.) (1.90-mm) to 20-gage (0.036-in.)
using roofing nails, common nails (5.2) or staples (5.3) for
(0.91mm) steel studs shall meet the following requirements:
wood framing and screws (5.4) for metal framing. Apply
Head type bugle head
fasteners to intermediate framing members first. For wood
Head diameter, min, in. (mm) ⁄16 (7.94)
1 framing, space fasteners 6 in. (152 mm) (Note 1) on center.
Length, min, in. (mm) 1 ⁄4 (31.8)
Major diameter, in. (mm) ⁄64 (3.57)
Applyperimeterfastene
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