Technical Information - GB_Submittal_eXP Sheathing - Attachment 6.pdf

Gold Bond® eXP® Sheathing Technical Information

800.NATIONAL • 800.628.4662

06 16 43 / NGC

Job Name________________________________________________________________________________

Contractor_ _____________________________________________________ Date ____________________

Submittal Approvals: (Stamps or Signatures)

DESCRIPTION

Gold Bond® eXP® Sheathing consists of a moisture- and mold-resistant gypsum core encased in a coated, specially designed PURPLE fiberglass mat on the face, back and sides. It is available in either a Regular or Type X core. The glass mat is folded around the long edges to reinforce and protect the core, and it provides superior weather resistance.

Use it for attachment to the outside of wall and soffit framing as a substrate for exterior cladding.

GridMarX® are printed on the glass mat surface to help installers instantly identify stud locations and make accurate cuts without having to pencil in or snap chalk lines.

BASIC USES

Applications

• Use it as a sheathing on wood or steel framing to provide fire resistance and weather protection when used under exterior claddings, such as wood, vinyl and fiber cement siding, masonry veneer, Exterior Insulation and Finish System (EIFS) and stucco.

• Use it as a sheathing in fire-resistance-rated exterior wall assemblies.

Advantages

• Fire-resistant material with a non-combustible gypsum core helps protect framing elements, even when cladding is combustible.

• Does not require taping of joints when used in fire-rated exterior wall assemblies.

• Resists the growth of mold per ASTM D3273 with a score of 10, the best possible score.

• Provides superior water resistance without impeding vapor transmission.

• Scores and snaps to exact size without sawing.

• Dimensionally stable under changes in temperature and relative humidity and resists warping, rippling, buckling and sagging.

• Ideally suited for soffit applications and radius applications.

• Offers a 12-month extended exposure warranty for typical weather conditions. Refer to Gold Bond Building Products, LLC limited warranties for further details.

• Coated fiberglass facers for easy handling.

• Features the GridMarX guide marks on the panel to allow for faster and accurate installation.

• Achieves UL GREENGUARD Gold Certification for low chemical emissions into indoor air during product usage. For more information, visit: ul.com/gg.

INSTALLATION RECOMMENDATIONS

General

Install eXP Sheathing in accordance with manufacturer’s written recommendations, GA-253, Application of Gypsum Sheathing;

ASTM C1280 Standard Specification for Application of Exterior Gypsum Panel Products for Use as Sheathing; and other standards referenced in this document.

Fastening

Nails: Galvanized, 11-gauge, 7/16" (11.1 mm) head,1-1/2" (38.1 mm) long for 1/2" (12.7 mm) sheathing and 1-3/4" (44.4 mm) long for 5/8" (15.9 mm) sheathing.

Screws: ASTM C1002 or ASTM C954, 1-1/4" (31.7 mm) long Type W for wood framing and 1" (25.4 mm) long Type S-12 for metal framing.

Staples: Galvanized 16-gauge, 7/16" (11.1 mm) crown, 1-1/2" (38.1 mm) long for 1/2" (12.7 mm) sheathing and 1-5/8" (41.3 mm) long for 5/8" (15.9 mm) sheathing.

All fasteners used to attach the sheathing to structural framing must be driven so that the heads are at, or slightly below the surface of the sheathing without fracturing the core. Staples should be driven with the crown parallel to the framing. Fasteners should be no less than 3/8" (9.5 mm) from the edges and ends of the panel. When shear values are not required, fasteners should be spaced not more than 8" (203 mm) o.c. along the vertical ends or edges and intermediate supports.

Sheathing eXP Sheathing may be attached parallel to or perpendicular to wood or metal framing. For horizontal applications, install eXP Sheathing with end joints staggered.

Use appropriate panel orientation for specific fire assemblies and shear wall applications, as required by the design.

Install eXP Sheathing with vertical edges butting over the center of framing members. Fit sheathing snugly around all openings.

Install panels with a 3/8" (9.5 mm) gap where non-load-bearing construction abuts structural elements.

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TECHNICAL DATA

Gold Bond® eXP® Sheathing

Physical Properties 1/2" eXP Sheathing 5/8" eXP Fire-Shield Sheathing

Thickness1, Nominal 1/2" (12.7 mm) 5/8" (15.9 mm)

Width1, Nominal 4' (1,219 mm) 4' (1,219 mm)

Length1, 4, Standard 8' – 12' (2,438 mm – 3,658 mm) 8' – 12' (2,438 mm – 3,658 mm)

Weight, Nominal 1.9 lbs./sq. ft. (9.28 k/m2) 2.5 lbs./sq. ft. (12.21 k/m2)

Edges1 Square Square

Flexural Strength1, Perpendicular ≥ 100 lbf. (445 N) ≥ 140 lbf. (623 N)

Flexural Strength1, Parallel ≥ 80 lbf. (356 N) ≥ 100 lbf. (445 N)

Humidified Deflection1 ≤ 2/8" (6.4 mm) ≤ 1/8" (3.2 mm)

Nail Pull Resistance1 ≥ 80 lbf. (356 N) ≥ 90 lbf. (400 N)

Hardness1 – Core, Edges and Ends ≥ 15 lbf. (67 N) ≥ 15 lbf. (67 N)

Bending Radius 6' (1,829 mm) 8' (2,438 mm)

Thermal Resistance5 R = .43 R = .54

Permeance6 22 perms 19 perms

Water Absorption1 (% of Weight) ≤ 10% ≤ 10%

Linear Expansion with Change Moisture 6.25 x 10-6 in./in./%RH 6.25 x 10-6 in./in./%RH

Coefficient of Thermal Expansion 9.26 x 10-6 in./in./°F 9.26 x 10-6 in./in./°F

Racking Strength7 (Ultimate – not design value) > 540 lbs. ft. (732 N/m) > 654 lbs. ft. (887 N/m)

Mold Resistance8, ASTM D3273 Score of 10 Score of 10

Compressive Strength9 ≥ 500 psi ≥ 500 psi

Product Standard Compliance ASTM C1177 ASTM C1177

Fire-Resistance Characteristics

Core Type Regular Type X

UL Type Designation N/A FSW-6

Combustibility2 Non-combustible Non-combustible

Surface Burning Characteristics3 Class A Class A

Flame Spread3 0 0

Smoke Development3 0 0

Applicable Standards and References

ASTM C473 Standard Test Methods for Physical Testing of Gypsum Panel Products

ASTM C518 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus

ASTM C840 Standard Specification for Application and Finishing of Gypsum Board

ASTM C1177 Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing

ASTM C1280 Standard Specification for Application of Exterior Gypsum Panel Products for Use as Sheathing

ASTM D3273 Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber

ASTM E72 Standard Test Methods for Conducting Strength Tests of Panels for Building Construction

ASTM E84 Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM E96 Standard Test Methods for Water Vapor Transmission of Materials

ASTM E119 Standard Test Methods for Fire Tests of Building Construction and Materials

ASTM E136 Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750˚C

Gypsum Association, GA-214, Levels of Finish for Gypsum Panel Products

Gypsum Association, GA-216, Application and Finishing of Gypsum Panel Products

Gypsum Association, GA-238, Guidelines for Prevention of Mold Growth on Gypsum Board

Gypsum Association, GA-253, Application of Gypsum Sheathing

Gold Bond Building Products, LLC Manufacturer Standards, NGC Construction Guide

(Continued from page 1)

To prevent wicking, install panels with a 1/4" (6.4 mm) gap where they abut masonry or similar materials that might retain moisture.

Locate control joints as required by building design and as recommended by the manufacturer of the specified cladding material.

Vinyl, Wood and Fiber Cement Siding

Apply horizontal siding and vertical siding panels directly over eXP Sheathing covered with weather-resistive barrier. Butt siding joints over framing members. Fasteners should have a minimum 1" (25.4 mm) penetration into each wood framing member and penetration of each metal framing member recommended by fastener manufacturer.

Stucco

Nail or screw 3.4 lb. self-furring galvanized Diamond Mesh metal lath through weather-resistant barrier and eXP Sheathing into the framing. Install metal lath immediately after installing eXP Sheathing.

Brick Veneer

Wall ties for masonry veneer should be fastened through eXP Sheathing with fasteners that penetrate a minimum of 1" (25.4 mm) into wood framing and recommended penetration of cold-formed metal framing. Maintain an air space of minimum 2" (50.8 mm) between eXP Sheathing and brick veneer per recommendations of the Brick Institute of America.

Shear Wall Applications with eXP Sheathing

For shear walls constructed with 1/2" (12.7 mm) and 5/8" (15.9 mm) eXP Sheathing, apply sheathing vertically to wood studs 16" (406 mm) o.c.

with 11-gauge, 1-3/4" (44.4 mm) long, galvanized nails 4" (102 mm) o.c.

at edges and 8" (203 mm) o.c. at intermediate studs.

Corner Bracing: Where continuous diagonal bracing is required, many building codes allow the use of 48" (1,219 mm) wide 5/8" (15.9 mm) gypsum sheathing panels applied vertically to be used in place of 1" (25.4 mm) x 4" (102 mm) wood let-in or metal strap bracing.

Shear Walls: Where wind or seismic forces require shear walls to resist these lateral forces, most building codes provide allowable shear values for walls having gypsum sheathing applied vertically to wood framing. Specific values with construction requirements and limitations are contained in the model building code (ICC: International Building Code [IBC] and International Residential Code for One- and Two-Family Dwellings [IRC]). Shear values for all gypsum panels, including gypsum sheathing, are defined in GA-229-08, Shear Values for Screw Application of Gypsum Board on Walls.

Mold and Mildew Resistance eXP Sheathing was designed to provide extra protection against mold and mildew. When tested by an independent laboratory, per ASTM D3273, eXP Sheathing achieved a score of 10, the best possible score for this test.

The use of eXP Sheathing in actual installations may not achieve the same results as were achieved in controlled, laboratory conditions.

No material can be considered “mold proof,” nor is it certain that any material will resist mold indefinitely. When used in conjunction with good design, handling and construction practices, eXP Sheathing can provide increased mold resistance versus standard sheathing products. As with any building material, avoiding water exposure during handling, storage and installation, and after installation is complete, is the best way to avoid the formation of mold or mildew.

Fire Resistance Ratings

Fire Resistance ratings represent the results of tests on assemblies made up of specific materials in a specific configuration. When selecting construction designs to meet certain fire resistance requirements, caution must be used to ensure that each component of the assembly is the one specified in the test. Further, precautions should be taken that assembly procedures are in accordance with those of the tested assembly. For copies of specific tests, call

1-800-NATIONAL.

5/8" eXP Fire-Shield Sheathing is tested in accordance with ASTM Standard E119 and is classified as Type X for use in UL Listings.

Joint Treatment eXP Sheathing is compatible with a variety of exterior systems.

For applications requiring joint treatment, joint finishes must be compatible with the exterior system specified. Consult your weather/ water-resistant barrier manufacturer, cladding manufacturer or local building code authority to determine the appropriate joint treatment. The eXP Sheathing 12-month exposure limited warranty does not require, for its applicability, the use of joint treatment or a weather barrier.

Decoration

Soffit and Ceiling applications only

Embed 2" (51 mm) wide paper or fiberglass mesh tape in a setting compound over all joints. Once dry, apply a skim coat of setting compound over the panels to achieve a uniform, smooth finish over the entire area. Prime with exterior grade primer and finish with two coats of exterior grade paint.

Safety

Installers should wear long pants and a long-sleeved, loose fitting shirt. Use protective gloves and special eye protection (goggles or safety glasses with side shield). Wear a dust mask when sanding;

you may need additional breathing protection in extremely dusty conditions. Do not use a power saw to cut this product.

Caution: Because this product contains fiberglass, dust and glass fibers may be released during normal handling, which could result in eye or skin irritation or cause difficulty in breathing. Whenever possible, avoid contact with the skin and eyes and avoid breathing dust or fibers that may be released during installation. Consult the SDS for this product, available at goldbondbuilding.com before use.

http://goldbondbuilding.com

FOR MORE INFORMATION

Architectural Specifications

Gold Bond Building Products CSI MasterFormat® 3-part guide specifications are downloadable as editable Microsoft® Word documents at: goldbondbuilding.com.

Latest Technical Information and Update

Visit goldbondbuilding.com or call National Gypsum Company Construction Services: 1-800-NATIONAL (628-4662).

111046 REV. 06 25

National Gypsum Company is the exclusive service provider for products manufactured by Gold Bond Building Products, LLC.

The eXP family of products is manufactured by Gold Bond Building Products, LLC.

LIMITATIONS

• eXP Sheathing is not a finished surface, nor is it a substrate for the direct application of joint compound, stucco, paint or textures in exterior wall applications. Exterior soffit applications are permitted.

Placement of vapor retarders within the wall assembly is the responsibility of the design professional.

• Do not use eXP Sheathing as a nailing base. Mechanical fasteners should pass through the sheathing and engage the framing member behind the panel.

• Install materials used in conjunction with eXP Sheathing per the respective manufacturer’s recommendations.

• eXP Sheathing is resistant to weather, but it is not intended for immersion in water and should not be subjected to ponding or to cascading water conditions.

• Do not apply eXP Sheathing below grade. Comply with building code grade clearance requirements.

• Do not laminate eXP Sheathing directly to masonry surfaces; fasten panels to furring strips or framing.

• eXP Sheathing is not intended for tile applications. For tile applications, use Gold Bond® eXP® Tile Backer.

• Gypsum sheathing is not a replacement for specific structurally engineered sheathing in shear wall designs.

• Adhesive-only application of eXP Sheathing to framing is not recommended.

• Framing supports must not exceed 24" (610 mm) o.c.

• Design details, including fasteners, sealants and control joints, must be properly installed per system specifications. Openings and penetrations must be properly flashed and sealed according to code, building design and weather-resistive barrier manufacturer’s instructions. Failure to do so will void the warranty; refer to eXP Sheathing warranty for terms, conditions and limitations.

• Avoid conditions that will create moisture in the air and condensation on eXP Sheathing. The use of unvented or improperly vented forced air heaters in the building creates water vapor volumes which can condense on the exterior sheathing. The use of these heaters and any resulting damage is not the responsibility of Gold Bond Building Products. Please consult heater manufacturer for proper use and ventilation.

Gold Bond Building Products, LLC 2001 Rexford Road Charlotte, NC 28211

704.365.7300 goldbondbuilding.com

National Gypsum Company is the exclusive service provider for products manufactured by Gold Bond Building Products, LLC.

http://goldbondbuilding.com